chore(deps): update dependency com.google.cloud:google-cloud-spanner-jdbc to v2.20.0 (#1667)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-spanner-jdbc](https://togithub.com/googleapis/java-spanner-jdbc) | `2.19.4` -> `2.20.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-spanner-jdbc/2.20.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-spanner-jdbc/2.20.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-spanner-jdbc/2.19.4/2.20.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-spanner-jdbc/2.19.4/2.20.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-spanner-jdbc (com.google.cloud:google-cloud-spanner-jdbc)</summary>

### [`v2.20.0`](https://togithub.com/googleapis/java-spanner-jdbc/blob/HEAD/CHANGELOG.md#2200-2024-06-27)

[Compare Source](https://togithub.com/googleapis/java-spanner-jdbc/compare/v2.19.4...v2.20.0)

##### Features

-   Add OpenTelemetry tracing ([#&#8203;1568](https://togithub.com/googleapis/java-spanner-jdbc/issues/1568)) ([1485a04](https://togithub.com/googleapis/java-spanner-jdbc/commit/1485a04272c270851468254bebffe4f7d846f17c))

##### Dependencies

-   Update dependency com.google.api.grpc:proto-google-cloud-trace-v1 to v2.45.0 ([#&#8203;1659](https://togithub.com/googleapis/java-spanner-jdbc/issues/1659)) ([0491712](https://togithub.com/googleapis/java-spanner-jdbc/commit/0491712babfdc7088358f28c4f261e3ec6dd0d2b))
-   Update dependency com.google.cloud:google-cloud-spanner-bom to v6.70.0 ([#&#8203;1657](https://togithub.com/googleapis/java-spanner-jdbc/issues/1657)) ([83aaec1](https://togithub.com/googleapis/java-spanner-jdbc/commit/83aaec17b0c28ac9ef45e99eb878d40572124f3f))
-   Update dependency com.google.cloud:google-cloud-trace to v2.45.0 ([#&#8203;1661](https://togithub.com/googleapis/java-spanner-jdbc/issues/1661)) ([648224c](https://togithub.com/googleapis/java-spanner-jdbc/commit/648224cfb2310d80f781386be64be00157133a30))
-   Update dependency com.google.cloud:sdk-platform-java-config to v3.32.0 ([#&#8203;1654](https://togithub.com/googleapis/java-spanner-jdbc/issues/1654)) ([503e281](https://togithub.com/googleapis/java-spanner-jdbc/commit/503e281106910dc9352deeaf790097e495df127b))
-   Update dependency org.springframework.boot:spring-boot-starter-data-jdbc to v3.3.1 ([#&#8203;1648](https://togithub.com/googleapis/java-spanner-jdbc/issues/1648)) ([4df665f](https://togithub.com/googleapis/java-spanner-jdbc/commit/4df665fa3a0b65757fc1c00fcf7a0fbd6c0c5d2e))
-   Update dependency org.springframework.boot:spring-boot-starter-parent to v3.3.1 ([#&#8203;1649](https://togithub.com/googleapis/java-spanner-jdbc/issues/1649)) ([efe87a6](https://togithub.com/googleapis/java-spanner-jdbc/commit/efe87a6016b8d61c42f4a4ad5b7ead180545d24e))

</details>

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Author: renovate-bot

samples/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner-jdbc</artifactId>
-      <version>2.19.4</version>
+      <version>2.20.0</version>
     </dependency>
     <!-- [END spanner-jdbc_install_without_bom] -->
 

samples/spring-data-jdbc/pom.xml

@@ -62,7 +62,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner-jdbc</artifactId>
-      <version>2.19.4</version>
+      <version>2.20.0</version>
     </dependency>
     <dependency>
       <groupId>org.postgresql</groupId>