build(deps): bump google-apis-core from 0.15.0 to 0.15.1

Bumps [google-apis-core](https://github.com/googleapis/google-api-ruby-client) from 0.15.0 to 0.15.1.
- [Release notes](https://github.com/googleapis/google-api-ruby-client/releases)
- [Changelog](https://github.com/googleapis/google-api-ruby-client/blob/main/google-apis-core/CHANGELOG.md)
- [Commits](googleapis/google-api-ruby-client@google-apis-core/v0.15.0...google-apis-core/v0.15.1)

---
updated-dependencies:
- dependency-name: google-apis-core
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -280,14 +280,14 @@ GEM
     geckoboard-ruby (0.4.0)
     globalid (1.2.1)
       activesupport (>= 6.1)
-    google-apis-core (0.15.0)
+    google-apis-core (0.15.1)
       addressable (~> 2.5, >= 2.5.1)
       googleauth (~> 1.9)
-      httpclient (>= 2.8.1, < 3.a)
+      httpclient (>= 2.8.3, < 3.a)
       mini_mime (~> 1.0)
+      mutex_m
       representable (~> 3.0)
       retriable (>= 2.0, < 4.a)
-      rexml
     google-apis-sheets_v4 (0.33.0)
       google-apis-core (>= 0.15.0, < 2.a)
     google-cloud-env (2.1.1)