Update deps: grpc, protobuf, guava, junit, tomcat-annotations (#52)

Author: njhill

pom.xml

@@ -55,15 +55,15 @@
    </distributionManagement>
 
    <properties>
-      <grpc-version>1.35.0</grpc-version>
+      <grpc-version>1.36.1</grpc-version>
       <netty-version>4.1.52.Final</netty-version>
       <netty-tcnative-version>2.0.34.Final</netty-tcnative-version>
-      <protobuf-version>3.14.0</protobuf-version>
+      <protobuf-version>3.15.7</protobuf-version>
       <gson-version>2.8.6</gson-version>
       <slf4j-version>1.7.30</slf4j-version>
-      <junit-version>4.13.1</junit-version>
-      <guava-version>30.1-jre</guava-version>
-      <annotations-version>9.0.41</annotations-version>
+      <junit-version>4.13.2</junit-version>
+      <guava-version>30.1.1-jre</guava-version>
+      <annotations-version>9.0.44</annotations-version>
 
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>