Build: Bump com.google.cloud:libraries-bom from 26.26.0 to 26.27.0

Bumps [com.google.cloud:libraries-bom](https://github.com/googleapis/java-cloud-bom) from 26.26.0 to 26.27.0.
- [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@v26.26.0...v26.27.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -39,7 +39,7 @@ findbugs-jsr305 = "3.0.2"
 flink115 = { strictly = "[1.15, 1.16[", prefer = "1.15.0"} # see rich version usage explanation above
 flink116 = { strictly = "[1.16, 1.17[", prefer = "1.16.2"}
 flink117 = { strictly = "[1.17, 1.18[", prefer = "1.17.1"}
-google-libraries-bom = "26.26.0"
+google-libraries-bom = "26.27.0"
 guava = "32.1.3-jre"
 hadoop2 = "2.7.3"
 hadoop3-client = "3.3.6"