build(deps): bump grpc from 1.80.0 to 1.81.0

Bumps `grpc` from 1.80.0 to 1.81.0.

Updates `io.grpc:grpc-protobuf-lite` from 1.80.0 to 1.81.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.80.0...v1.81.0)

Updates `io.grpc:grpc-stub` from 1.80.0 to 1.81.0
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.80.0...v1.81.0)

---
updated-dependencies:
- dependency-name: io.grpc:grpc-protobuf-lite
  dependency-version: 1.81.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.grpc:grpc-stub
  dependency-version: 1.81.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -53,7 +53,7 @@ play-service-ml-barcode = "18.3.1"
 google-play-billing = "8.3.0"
 google-play-updates = "2.1.0"
 
-grpc = "1.80.0"
+grpc = "1.81.0"
 grpc-okhttp = "1.80.0"
 grpc-kotlin = "1.5.0"
 protobuf = "4.34.1"