Bump grpc-protobuf from 1.29.0 to 1.53.0 in /tikv-client

Bumps [grpc-protobuf](https://github.com/grpc/grpc-java) from 1.29.0 to 1.53.0.
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.29.0...v1.53.0)

---
updated-dependencies:
- dependency-name: io.grpc:grpc-protobuf
  dependency-type: direct:production
...

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

tikv-client/pom.xml

@@ -20,7 +20,7 @@
         <protobuf.version>3.5.1</protobuf.version>
         <junit.version>4.12</junit.version>
         <slf4j.version>1.7.16</slf4j.version>
-        <grpc.version>1.29.0</grpc.version>
+        <grpc.version>1.53.0</grpc.version>
         <powermock.version>1.6.6</powermock.version>
         <jackson.annotations.version>2.12.6</jackson.annotations.version>
         <jackson.databind.version>2.12.7.1</jackson.databind.version>