chore(deps): update dependency com.google.cloud:libraries-bom to v26.66.0 (googleapis#2182)

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)) | `26.65.0` -> `26.66.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:libraries-bom/26.66.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:libraries-bom/26.66.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:libraries-bom/26.65.0/26.66.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:libraries-bom/26.65.0/26.66.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v26.66.0`](https://redirect.github.com/googleapis/java-cloud-bom/blob/HEAD/CHANGELOG.md#26660-2025-08-15)

[Compare Source](https://redirect.github.com/googleapis/java-cloud-bom/compare/v26.65.0...v26.66.0)

##### Dependencies

- update dependency com.google.cloud:first-party-dependencies to v3.51.0 ([#&#8203;7146](https://redirect.github.com/googleapis/java-cloud-bom/issues/7146)) ([0064be3](https://redirect.github.com/googleapis/java-cloud-bom/commit/0064be3b306a1714525bac9453df7df2fceaa0b1))
- update dependency com.google.cloud:gapic-libraries-bom to v1.66.0 ([#&#8203;7155](https://redirect.github.com/googleapis/java-cloud-bom/issues/7155)) ([2848092](https://redirect.github.com/googleapis/java-cloud-bom/commit/28480920a34e5fb661ba12070d394d6b0ce740d7))
- update dependency com.google.cloud:google-cloud-bigquery to v2.54.1 ([#&#8203;7158](https://redirect.github.com/googleapis/java-cloud-bom/issues/7158)) ([e42b23d](https://redirect.github.com/googleapis/java-cloud-bom/commit/e42b23d8ae5ef9c314c3206582f55632fa6fc13d))
- update dependency com.google.cloud:google-cloud-bigquerystorage-bom to v3.16.2 ([#&#8203;7147](https://redirect.github.com/googleapis/java-cloud-bom/issues/7147)) ([822732e](https://redirect.github.com/googleapis/java-cloud-bom/commit/822732e09e2ef7fea4adbb90191572169c4ca888))
- update dependency com.google.cloud:google-cloud-bigtable-bom to v2.65.0 ([#&#8203;7156](https://redirect.github.com/googleapis/java-cloud-bom/issues/7156)) ([9329cc4](https://redirect.github.com/googleapis/java-cloud-bom/commit/9329cc44ea98b4cb941b4def4955712578be6316))
- update dependency com.google.cloud:google-cloud-datastore-bom to v2.31.2 ([#&#8203;7148](https://redirect.github.com/googleapis/java-cloud-bom/issues/7148)) ([b5acc9c](https://redirect.github.com/googleapis/java-cloud-bom/commit/b5acc9ccbec013d26a19a7d49408d47a616a06de))
- update dependency com.google.cloud:google-cloud-firestore-bom to v3.32.1 ([#&#8203;7159](https://redirect.github.com/googleapis/java-cloud-bom/issues/7159)) ([430c212](https://redirect.github.com/googleapis/java-cloud-bom/commit/430c2120ba13438879b7eb5acb13eb40ebf6d62a))
- update dependency com.google.cloud:google-cloud-logging-bom to v3.23.2 ([#&#8203;7149](https://redirect.github.com/googleapis/java-cloud-bom/issues/7149)) ([0a32fa1](https://redirect.github.com/googleapis/java-cloud-bom/commit/0a32fa1a03265264e732a8f3aae3fd27c062888e))
- update dependency com.google.cloud:google-cloud-logging-logback to v0.132.13-alpha ([#&#8203;7150](https://redirect.github.com/googleapis/java-cloud-bom/issues/7150)) ([d3fb9c5](https://redirect.github.com/googleapis/java-cloud-bom/commit/d3fb9c54143c0ffd4172d005f518f05f0b15114b))
- update dependency com.google.cloud:google-cloud-nio to v0.128.2 ([#&#8203;7151](https://redirect.github.com/googleapis/java-cloud-bom/issues/7151)) ([c1475ca](https://redirect.github.com/googleapis/java-cloud-bom/commit/c1475ca5f9119b63c4542fb51f28a23558abb27f))
- update dependency com.google.cloud:google-cloud-pubsub-bom to v1.141.2 ([#&#8203;7152](https://redirect.github.com/googleapis/java-cloud-bom/issues/7152)) ([45a2d3f](https://redirect.github.com/googleapis/java-cloud-bom/commit/45a2d3f78efcda2d7b84b2411eafa2fd9dcde34b))
- update dependency com.google.cloud:google-cloud-pubsublite-bom to v1.15.13 ([#&#8203;7153](https://redirect.github.com/googleapis/java-cloud-bom/issues/7153)) ([6ee2ee6](https://redirect.github.com/googleapis/java-cloud-bom/commit/6ee2ee606c63763d244ce147d9d5831b347a113f))
- update dependency com.google.cloud:google-cloud-spanner-bom to v6.98.1 ([#&#8203;7154](https://redirect.github.com/googleapis/java-cloud-bom/issues/7154)) ([58c4bf6](https://redirect.github.com/googleapis/java-cloud-bom/commit/58c4bf6ab85cac71e818f5c54f361370650cc1da))
- update dependency com.google.cloud:google-cloud-spanner-jdbc to v2.32.1 ([#&#8203;7160](https://redirect.github.com/googleapis/java-cloud-bom/issues/7160)) ([3b64c48](https://redirect.github.com/googleapis/java-cloud-bom/commit/3b64c4843501ad023d045ac1b3e0c70a86f2dfea))
- update dependency com.google.cloud:google-cloud-storage-bom to v2.55.0 ([#&#8203;7157](https://redirect.github.com/googleapis/java-cloud-bom/issues/7157)) ([47da2af](https://redirect.github.com/googleapis/java-cloud-bom/commit/47da2af69a62eef497a9a651b2406d09a1a23caa))

</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>26.65.0</version>
+        <version>26.66.0</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>26.65.0</version>
+        <version>26.66.0</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>26.65.0</version>
+        <version>26.66.0</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>26.65.0</version>
+        <version>26.66.0</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>26.65.0</version>
+        <version>26.66.0</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>26.65.0</version>
+        <version>26.66.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>