chore(main): release 2.61.0 (#3867)

🤖 I have created a release *beep* *boop*
---


<details><summary>2.61.0</summary>

##
[2.61.0](v2.60.2...v2.61.0)
(2025-08-04)


### Features

* **mtls:** Add support for X.509-based mTLS-transport in Java GAX lib
([#3852](#3852))
([2d02344](2d02344))


### Bug Fixes

* improve error messaging for LRO CancellationException
([#3873](#3873))
([9cae675](9cae675))
* make generation config update logs verbose
([#3764](#3764))
([9b1a34b](9b1a34b))
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

.cloudbuild/graalvm/cloudbuild-test-a.yaml

@@ -14,7 +14,7 @@
 
 timeout: 7200s # 2 hours
 substitutions:
-  _SHARED_DEPENDENCIES_VERSION: '3.50.3-SNAPSHOT' # {x-version-update:google-cloud-shared-dependencies:current}
+  _SHARED_DEPENDENCIES_VERSION: '3.51.0' # {x-version-update:google-cloud-shared-dependencies:current}
   _JAVA_SHARED_CONFIG_VERSION: '1.16.1'
 options:
   machineType: 'E2_HIGHCPU_8'

.cloudbuild/graalvm/cloudbuild-test-b.yaml

@@ -14,7 +14,7 @@
 
 timeout: 7200s # 2 hours
 substitutions:
-  _SHARED_DEPENDENCIES_VERSION: '3.50.3-SNAPSHOT' # {x-version-update:google-cloud-shared-dependencies:current}
+  _SHARED_DEPENDENCIES_VERSION: '3.51.0' # {x-version-update:google-cloud-shared-dependencies:current}
   _JAVA_SHARED_CONFIG_VERSION: '1.16.1'
 options:
   machineType: 'E2_HIGHCPU_8'

.cloudbuild/graalvm/cloudbuild-test-c.yaml

@@ -14,7 +14,7 @@
 
 timeout: 7200s # 2 hours
 substitutions:
-  _SHARED_DEPENDENCIES_VERSION: '3.50.3-SNAPSHOT' # {x-version-update:google-cloud-shared-dependencies:current}
+  _SHARED_DEPENDENCIES_VERSION: '3.51.0' # {x-version-update:google-cloud-shared-dependencies:current}
   _JAVA_SHARED_CONFIG_VERSION: '1.16.1'
 options:
   machineType: 'E2_HIGHCPU_8'

.cloudbuild/graalvm/cloudbuild.yaml

@@ -14,7 +14,7 @@
 
 timeout: 7200s # 2 hours
 substitutions:
-  _SHARED_DEPENDENCIES_VERSION: '3.50.3-SNAPSHOT' # {x-version-update:google-cloud-shared-dependencies:current}
+  _SHARED_DEPENDENCIES_VERSION: '3.51.0' # {x-version-update:google-cloud-shared-dependencies:current}
   _JAVA_SHARED_CONFIG_VERSION: '1.16.1'
 steps:
   # GraalVM A build

.cloudbuild/library_generation/cloudbuild-library-generation-push.yaml

@@ -14,7 +14,7 @@
 
 timeout: 7200s # 2 hours
 substitutions:
-  _GAPIC_GENERATOR_JAVA_VERSION: '2.60.3-SNAPSHOT' # {x-version-update:gapic-generator-java:current}
+  _GAPIC_GENERATOR_JAVA_VERSION: '2.61.0' # {x-version-update:gapic-generator-java:current}
   _PRIVATE_IMAGE_NAME: "us-docker.pkg.dev/java-hermetic-build-prod/private-resources/java-library-generation"
   _PRIVATE_SHA_IMAGE_ID: "${_PRIVATE_IMAGE_NAME}:${COMMIT_SHA}"
   _PRIVATE_LATEST_IMAGE_ID: "${_PRIVATE_IMAGE_NAME}:latest"

.cloudbuild/library_generation/library_generation.Dockerfile

@@ -21,7 +21,7 @@ FROM docker.io/library/maven:3.9.9-eclipse-temurin-17-alpine@sha256:969014ee8852
 WORKDIR /sdk-platform-java
 COPY . .
 # {x-version-update-start:gapic-generator-java:current}
-ENV DOCKER_GAPIC_GENERATOR_VERSION="2.60.3-SNAPSHOT"
+ENV DOCKER_GAPIC_GENERATOR_VERSION="2.61.0"
 # {x-version-update-end}
 
 # Download the java formatter

.cloudbuild/library_generation/library_generation_airlock.Dockerfile

@@ -21,7 +21,7 @@ FROM us-docker.pkg.dev/artifact-foundry-prod/docker-3p-trusted/maven@sha256:d3f0
 WORKDIR /sdk-platform-java
 COPY . .
 # {x-version-update-start:gapic-generator-java:current}
-ENV DOCKER_GAPIC_GENERATOR_VERSION="2.60.3-SNAPSHOT"
+ENV DOCKER_GAPIC_GENERATOR_VERSION="2.61.0"
 # {x-version-update-end}
 
 # Download the java formatter

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "2.60.2"
+  ".": "2.61.0"
 }

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## [2.61.0](https://github.com/googleapis/sdk-platform-java/compare/v2.60.2...v2.61.0) (2025-08-04)
+
+
+### Features
+
+* **mtls:** Add support for X.509-based mTLS-transport in Java GAX lib ([#3852](https://github.com/googleapis/sdk-platform-java/issues/3852)) ([2d02344](https://github.com/googleapis/sdk-platform-java/commit/2d02344d79f5cfdca7834aa0d6306f1b72a7505a))
+
+
+### Bug Fixes
+
+* improve error messaging for LRO CancellationException ([#3873](https://github.com/googleapis/sdk-platform-java/issues/3873)) ([9cae675](https://github.com/googleapis/sdk-platform-java/commit/9cae675f0ff44227cea60e6802769e82cce948f2))
+* make generation config update logs verbose ([#3764](https://github.com/googleapis/sdk-platform-java/issues/3764)) ([9b1a34b](https://github.com/googleapis/sdk-platform-java/commit/9b1a34b0dd08c0eddcf09ef5d81b225d0942f529))
+
 ## [2.60.2](https://github.com/googleapis/sdk-platform-java/compare/v2.60.1...v2.60.2) (2025-07-22)
 
 

WORKSPACE

@@ -58,7 +58,7 @@ load("@rules_jvm_external//:defs.bzl", "maven_install")
 load("@io_grpc_grpc_java//:repositories.bzl", "IO_GRPC_GRPC_JAVA_ARTIFACTS")
 load("@io_grpc_grpc_java//:repositories.bzl", "IO_GRPC_GRPC_JAVA_OVERRIDE_TARGETS")
 
-_gapic_generator_java_version = "2.60.3-SNAPSHOT"  # {x-version-update:gapic-generator-java:current}
+_gapic_generator_java_version = "2.61.0"  # {x-version-update:gapic-generator-java:current}
 
 maven_install(
     artifacts = [