chore(deps): update dependency com.google.cloud:libraries-bom to v26.68.0 (#2212)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:libraries-bom](https://cloud.google.com/java/docs/bom) ([source](https://redirect.github.com/googleapis/java-cloud-bom)) | `26.67.0` -> `26.68.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:libraries-bom/26.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:libraries-bom/26.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:libraries-bom/26.67.0/26.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:libraries-bom/26.67.0/26.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/java-cloud-bom (com.google.cloud:libraries-bom)</summary>

### [`v26.68.0`](https://redirect.github.com/googleapis/java-cloud-bom/blob/HEAD/CHANGELOG.md#26680-2025-09-14)

[Compare Source](https://redirect.github.com/googleapis/java-cloud-bom/compare/v26.67.0...v26.68.0)

##### Dependencies

- update actions/github-script action to v8 ([#&#8203;7192](https://redirect.github.com/googleapis/java-cloud-bom/issues/7192)) ([cc7a174](https://redirect.github.com/googleapis/java-cloud-bom/commit/cc7a174d57a08f439d534090f67addf095007fd5))
- update actions/setup-java action to v5 ([#&#8203;7173](https://redirect.github.com/googleapis/java-cloud-bom/issues/7173)) ([6401ecd](https://redirect.github.com/googleapis/java-cloud-bom/commit/6401ecdcb04eca826a4360abd289cc59aed9fb3c))
- update actions/setup-node action to v5 ([#&#8203;7193](https://redirect.github.com/googleapis/java-cloud-bom/issues/7193)) ([0439194](https://redirect.github.com/googleapis/java-cloud-bom/commit/0439194e018faed23e1d7e93fa03d0303a8d7a7d))
- update actions/setup-python action to v6 ([#&#8203;7194](https://redirect.github.com/googleapis/java-cloud-bom/issues/7194)) ([65a777a](https://redirect.github.com/googleapis/java-cloud-bom/commit/65a777aec77d7d3e2ed9dbb0bae67707d337c9a9))
- update dependency com.google.cloud:first-party-dependencies to v3.52.1 ([#&#8203;7185](https://redirect.github.com/googleapis/java-cloud-bom/issues/7185)) ([b63a143](https://redirect.github.com/googleapis/java-cloud-bom/commit/b63a143662cb70a2645a739f13527906c7c81e90))
- update dependency com.google.cloud:gapic-libraries-bom to v1.68.0 ([#&#8203;7197](https://redirect.github.com/googleapis/java-cloud-bom/issues/7197)) ([d57bbc4](https://redirect.github.com/googleapis/java-cloud-bom/commit/d57bbc443faf9f61ebbf2868eacf5c2d560b2a3f))
- update dependency com.google.cloud:google-cloud-bigquery to v2.55.0. ([1333590](https://redirect.github.com/googleapis/java-cloud-bom/commit/1333590444970a42feba96a23ba15d60492b9420))
- update dependency com.google.cloud:google-cloud-bigquerystorage-bom to v3.17.0. ([1333590](https://redirect.github.com/googleapis/java-cloud-bom/commit/1333590444970a42feba96a23ba15d60492b9420))
- update dependency com.google.cloud:google-cloud-bigtable-bom to v2.66.0 ([#&#8203;7190](https://redirect.github.com/googleapis/java-cloud-bom/issues/7190)) ([a216187](https://redirect.github.com/googleapis/java-cloud-bom/commit/a216187f3ebd1b3c1b3b235789dc6cb1f6a5dc43))
- update dependency com.google.cloud:google-cloud-bigtable-bom to v2.66.0 ([#&#8203;7190](https://redirect.github.com/googleapis/java-cloud-bom/issues/7190)) ([3d3a307](https://redirect.github.com/googleapis/java-cloud-bom/commit/3d3a307c34ddd2eb7e046a8cc0fda099488ce4ad))
- update dependency com.google.cloud:google-cloud-datastore-bom to v2.32.0 ([#&#8203;7198](https://redirect.github.com/googleapis/java-cloud-bom/issues/7198)) ([5adf761](https://redirect.github.com/googleapis/java-cloud-bom/commit/5adf7619f322f56a9f6ec16888abe5ca0f18400e))
- update dependency com.google.cloud:google-cloud-firestore-bom to v3.33.0. ([1333590](https://redirect.github.com/googleapis/java-cloud-bom/commit/1333590444970a42feba96a23ba15d60492b9420))
- update dependency com.google.cloud:google-cloud-logging-bom to v3.23.4 ([#&#8203;7186](https://redirect.github.com/googleapis/java-cloud-bom/issues/7186)) ([cf2c1c4](https://redirect.github.com/googleapis/java-cloud-bom/commit/cf2c1c4d381bae3dc7ef1861b4f2d81cbc8bf37a))
- update dependency com.google.cloud:google-cloud-logging-logback to v0.132.15-alpha. ([1333590](https://redirect.github.com/googleapis/java-cloud-bom/commit/1333590444970a42feba96a23ba15d60492b9420))
- update dependency com.google.cloud:google-cloud-nio to v0.128.4 ([#&#8203;7187](https://redirect.github.com/googleapis/java-cloud-bom/issues/7187)) ([434d296](https://redirect.github.com/googleapis/java-cloud-bom/commit/434d296fa1e7ce28df76e689c8b0671a95138086))
- update dependency com.google.cloud:google-cloud-pubsub-bom to v1.141.4. ([1333590](https://redirect.github.com/googleapis/java-cloud-bom/commit/1333590444970a42feba96a23ba15d60492b9420))
- update dependency com.google.cloud:google-cloud-pubsublite-bom to v1.15.15 ([#&#8203;7188](https://redirect.github.com/googleapis/java-cloud-bom/issues/7188)) ([a979a18](https://redirect.github.com/googleapis/java-cloud-bom/commit/a979a186918a5ae21505c1a95dc9551d1a39dcce))
- update dependency com.google.cloud:google-cloud-spanner-bom to v6.100.0. ([1333590](https://redirect.github.com/googleapis/java-cloud-bom/commit/1333590444970a42feba96a23ba15d60492b9420))
- update dependency com.google.cloud:google-cloud-spanner-jdbc to v2.32.3 ([#&#8203;7200](https://redirect.github.com/googleapis/java-cloud-bom/issues/7200)) ([b692048](https://redirect.github.com/googleapis/java-cloud-bom/commit/b69204861820c59427928f96e916077a9522d5cd))
- update dependency com.google.cloud:google-cloud-storage-bom to v2.57.0 ([#&#8203;7191](https://redirect.github.com/googleapis/java-cloud-bom/issues/7191)) ([ac15f20](https://redirect.github.com/googleapis/java-cloud-bom/commit/ac15f20f9df505d7db71db0329b93c3423ee35c7))

</details>

---

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Author: renovate-bot

samples/quickperf/pom.xml

@@ -27,7 +27,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.67.0</version>
+        <version>26.68.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>

samples/snippets/pom.xml

@@ -26,7 +26,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.67.0</version>
+        <version>26.68.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>

samples/spring-data-jdbc/googlesql/pom.xml

@@ -37,7 +37,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.67.0</version>
+        <version>26.68.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>

samples/spring-data-jdbc/postgresql/pom.xml

@@ -37,7 +37,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.67.0</version>
+        <version>26.68.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>

samples/spring-data-mybatis/googlesql/pom.xml

@@ -42,7 +42,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.67.0</version>
+        <version>26.68.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>

samples/spring-data-mybatis/postgresql/pom.xml

@@ -35,7 +35,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.67.0</version>
+        <version>26.68.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>