Bump com.google.cloud:libraries-bom from 26.69.0 to 26.70.0 (#6787)

Bumps [com.google.cloud:libraries-bom](https://github.com/googleapis/java-cloud-bom) from 26.69.0 to 26.70.0.
- [Release notes](https://github.com/googleapis/java-cloud-bom/releases)
- [Changelog](https://github.com/googleapis/java-cloud-bom/blob/main/release-please-config.json)
- [Commits](googleapis/java-cloud-bom@v26.69.0...v26.70.0)

---
updated-dependencies:
- dependency-name: com.google.cloud:libraries-bom
  dependency-version: 26.70.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -105,7 +105,7 @@ errorprone = { module = "com.google.errorprone:error_prone_core", version = "2.4
 felixFramework = "org.apache.felix:org.apache.felix.framework:7.0.5"
 felixScr = "org.apache.felix:org.apache.felix.scr:2.2.14"
 gmetric4j = { module = "info.ganglia.gmetric4j:gmetric4j", version.ref = "gmetric4j" }
-googleCloudLibrariesBom = { module = "com.google.cloud:libraries-bom", version = "26.69.0" }
+googleCloudLibrariesBom = { module = "com.google.cloud:libraries-bom", version = "26.70.0" }
 googleCloudMonitoring = { module = "com.google.cloud:google-cloud-monitoring", version.ref = "google-cloud-monitoring" }
 googleOauth2Http = { module = "com.google.auth:google-auth-library-oauth2-http", version = "1.39.1"}
 grpcApi = { module = "io.grpc:grpc-api", version.ref = "grpc" }