Bump grpc.version from 1.76.0 to 1.77.0

Bumps `grpc.version` from 1.76.0 to 1.77.0.

Updates `io.grpc:grpc-netty` from 1.76.0 to 1.77.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.76.0...v1.77.0)

Updates `io.grpc:grpc-protobuf` from 1.76.0 to 1.77.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.76.0...v1.77.0)

Updates `io.grpc:grpc-stub` from 1.76.0 to 1.77.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.76.0...v1.77.0)

---
updated-dependencies:
- dependency-name: io.grpc:grpc-netty
  dependency-version: 1.77.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.grpc:grpc-protobuf
  dependency-version: 1.77.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.grpc:grpc-stub
  dependency-version: 1.77.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

spring-cloud-gateway-integration-tests/grpc/pom.xml

@@ -13,7 +13,7 @@
 	<properties>
 		<protoc.version>3.25.1</protoc.version>
 		<protobuf.version>4.31.1</protobuf.version>
-		<grpc.version>1.76.0</grpc.version>
+		<grpc.version>1.77.0</grpc.version>
 	</properties>
 
 	<parent>

spring-cloud-gateway-server-webflux/pom.xml

@@ -21,7 +21,7 @@
 	</organization>
 	<properties>
 		<main.basedir>${basedir}/..</main.basedir>
-		<grpc.version>1.76.0</grpc.version>
+		<grpc.version>1.77.0</grpc.version>
 		<protobuf.version>4.32.1</protobuf.version>
 		<context-propagation.version>1.0.0</context-propagation.version>
 	</properties>