chore: Release Please anontations for dependencies.properties (#3396)

Fixes #2428

The libraries released from api-common-java, java-common-protos, and
java-iam are annotated in gax-java/dependencies.properties. These
annotations allows the version values updated at the time of the release
pull request, ensuring the generated Gradle files to have a proper
dependency set.

gax-java/dependencies.properties

@@ -35,8 +35,10 @@ version.io_grpc=1.68.1
 # It should be constructed the following way:
 #   1) Take full artifact id (including the group and classifier (if any) portions) and remove version portion.
 #   2) Replace all characters which are neither alphabetic nor digits with the underscore ('_') character
+# {x-version-update-start:proto-google-common-protos:current}
 maven.com_google_api_grpc_proto_google_common_protos=com.google.api.grpc:proto-google-common-protos:2.46.0
 maven.com_google_api_grpc_grpc_google_common_protos=com.google.api.grpc:grpc-google-common-protos:2.46.0
+# {x-version-update-end}
 maven.com_google_auth_google_auth_library_oauth2_http=com.google.auth:google-auth-library-oauth2-http:1.30.0
 maven.com_google_auth_google_auth_library_credentials=com.google.auth:google-auth-library-credentials:1.30.0
 maven.io_opentelemetry_opentelemetry_api=io.opentelemetry:opentelemetry-api:1.42.1
@@ -67,10 +69,14 @@ maven.com_google_errorprone_error_prone_annotations=com.google.errorprone:error_
 maven.com_google_j2objc_j2objc_annotations=com.google.j2objc:j2objc-annotations:2.8
 maven.com_google_auto_value_auto_value=com.google.auto.value:auto-value:1.11.0
 maven.com_google_auto_value_auto_value_annotations=com.google.auto.value:auto-value-annotations:1.11.0
+# {x-version-update-start:api-common:current}
 maven.com_google_api_api_common=com.google.api:api-common:2.38.0
+# {x-version-update-end}
 maven.org_threeten_threetenbp=org.threeten:threetenbp:1.7.0
+# {x-version-update-start:proto-google-iam-v1:current}
 maven.com_google_api_grpc_grpc_google_iam_v1=com.google.api.grpc:grpc-google-iam-v1:1.41.0
 maven.com_google_api_grpc_proto_google_iam_v1=com.google.api.grpc:proto-google-iam-v1:1.41.0
+# {x-version-update-end}
 maven.com_google_http_client_google_http_client=com.google.http-client:google-http-client:1.45.0
 maven.com_google_http_client_google_http_client_gson=com.google.http-client:google-http-client-gson:1.45.0
 maven.org_codehaus_mojo_animal_sniffer_annotations=org.codehaus.mojo:animal-sniffer-annotations:1.24