chore(deps): bump com.google.cloud:google-cloud-firestore in /firesto…

…re (#619)

Bumps [com.google.cloud:google-cloud-firestore](https://github.com/googleapis/java-firestore) from 3.15.1 to 3.15.2.
- [Release notes](https://github.com/googleapis/java-firestore/releases)
- [Changelog](https://github.com/googleapis/java-firestore/blob/main/CHANGELOG.md)
- [Commits](googleapis/java-firestore@v3.15.1...v3.15.2)

---
updated-dependencies:
- dependency-name: com.google.cloud:google-cloud-firestore
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

firestore/build.gradle.kts

@@ -9,7 +9,7 @@ repositories {
 
 dependencies {
     implementation(kotlin("reflect"))
-    implementation("com.google.cloud:google-cloud-firestore:3.15.1")
+    implementation("com.google.cloud:google-cloud-firestore:3.15.2")
     testImplementation("junit:junit:4.13.2")
     testImplementation(kotlin("test"))
     // see: https://github.com/googleapis/sdk-platform-java/pull/1832