deps: update dependency com.google.cloud:google-cloud-spanner-bom to v6.43.1 (#6071)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-spanner-bom](https://togithub.com/googleapis/java-spanner) | `6.43.0` -> `6.43.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-spanner-bom/6.43.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-spanner-bom/6.43.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-spanner-bom/6.43.1/compatibility-slim/6.43.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-spanner-bom/6.43.1/confidence-slim/6.43.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v6.43.1`](https://togithub.com/googleapis/java-spanner/blob/HEAD/CHANGELOG.md#&#8203;6431-httpsgithubcomgoogleapisjava-spannercomparev6430v6431-2023-06-26)

[Compare Source](https://togithub.com/googleapis/java-spanner/compare/v6.43.0...v6.43.1)

##### Dependencies

-   Update dependency com.google.cloud:google-cloud-monitoring to v3.20.0 ([#&#8203;2492](https://togithub.com/googleapis/java-spanner/issues/2492)) ([faa6807](https://togithub.com/googleapis/java-spanner/commit/faa68073673e789e35b600dab72152591a647dc6))
-   Update dependency com.google.cloud:google-cloud-monitoring to v3.21.0 ([#&#8203;2510](https://togithub.com/googleapis/java-spanner/issues/2510)) ([f10400b](https://togithub.com/googleapis/java-spanner/commit/f10400baf2d320991e75794250b9e1b2fb218718))
-   Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.12.0.with temp exclusions. ([#&#8203;2512](https://togithub.com/googleapis/java-spanner/issues/2512)) ([ce04645](https://togithub.com/googleapis/java-spanner/commit/ce0464527ef489d351b9086f6bb8922f295f1897))
-   Update dependency com.google.cloud:google-cloud-trace to v2.19.0 ([#&#8203;2493](https://togithub.com/googleapis/java-spanner/issues/2493)) ([1dc7cea](https://togithub.com/googleapis/java-spanner/commit/1dc7cea723658c43b8c8d2e085c964371fb72223))
-   Update dependency com.google.cloud:google-cloud-trace to v2.20.0 ([#&#8203;2511](https://togithub.com/googleapis/java-spanner/issues/2511)) ([2ea52ec](https://togithub.com/googleapis/java-spanner/commit/2ea52ec1cef2468e6c36b76797a3878f270badaa))
-   Update dependency commons-io:commons-io to v2.13.0 ([#&#8203;2490](https://togithub.com/googleapis/java-spanner/issues/2490)) ([b087b0e](https://togithub.com/googleapis/java-spanner/commit/b087b0e813cacb4f08d12815d9371fe9c004ca9e))
-   Update dependency org.graalvm.buildtools:junit-platform-native to v0.9.23 ([#&#8203;2500](https://togithub.com/googleapis/java-spanner/issues/2500)) ([0b794a6](https://togithub.com/googleapis/java-spanner/commit/0b794a68d57eb990e013fdd05c72eaed868497b0))
-   Update dependency org.graalvm.buildtools:native-maven-plugin to v0.9.23 ([#&#8203;2501](https://togithub.com/googleapis/java-spanner/issues/2501)) ([9db5c78](https://togithub.com/googleapis/java-spanner/commit/9db5c7850b53fa10d1856d88908d5e8e95467206))
-   Update dependency org.json:json to v20230618 ([#&#8203;2504](https://togithub.com/googleapis/java-spanner/issues/2504)) ([8a87fee](https://togithub.com/googleapis/java-spanner/commit/8a87fee19bb2dd41495a15740893375c8778f71a))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -238,7 +238,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.43.0</version>
+        <version>6.43.1</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>