chore(deps): update grpc-java and protobuf
<impsort-maven-plugin.version>1.3.2</impsort-maven-plugin.version>
<!-- dependencies -->
- <grpc.version>1.26.0</grpc.version>
+ <grpc.version>1.27.1</grpc.version>
<slf4j.version>1.7.30</slf4j.version>
<plexus-compiler-javac-errorprone.version>2.8.5</plexus-compiler-javac-errorprone.version>
<error-prone-core.version>2.3.4</error-prone-core.version>
<jcommander.version>1.78</jcommander.version>
<jool.version>0.9.14</jool.version>
<!-- should be in sync with protobuf grpc dependencies -->
- <protobuf.version>3.5.1</protobuf.version>
+ <protobuf.version>3.11.4</protobuf.version>
<failsafe.version>2.3.3</failsafe.version>
<!-- osgi dependencies -->
