Bump com.google.cloud:google-cloud-monitoring from 3.63.0 to 3.64.0 (#6266)

Bumps [com.google.cloud:google-cloud-monitoring](https://github.com/googleapis/google-cloud-java) from 3.63.0 to 3.64.0.
- [Release notes](https://github.com/googleapis/google-cloud-java/releases)
- [Changelog](https://github.com/googleapis/google-cloud-java/blob/main/CHANGELOG.md)
- [Commits](https://github.com/googleapis/google-cloud-java/commits)

---
updated-dependencies:
- dependency-name: com.google.cloud:google-cloud-monitoring
  dependency-version: 3.64.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ dynatrace-utils = "2.2.1"
 ehcache2 = "2.10.9.2"
 ehcache3 = "3.10.8"
 gmetric4j = "1.0.10"
-google-cloud-monitoring = "3.63.0"
+google-cloud-monitoring = "3.64.0"
 grpc = "1.72.0"
 grpcKotlin = "1.4.3"
 guava = "32.1.3-jre"