Update guava version

Closes #631

PiperOrigin-RevId: 387620183

Author: cushon

eclipse_plugin/META-INF/MANIFEST.MF

@@ -11,5 +11,5 @@ Require-Bundle: org.eclipse.jdt.core;bundle-version="3.10.0",
  org.eclipse.ui,
  org.eclipse.equinox.common
 Bundle-ClassPath: .,
- lib/guava-28.1-jre.jar,
+ lib/guava-30.1.1-jre.jar,
  lib/google-java-format-1.9.jar

eclipse_plugin/build.properties

@@ -3,5 +3,5 @@ output.. = target/classes
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
-               lib/guava-28.1-jre.jar,\
+               lib/guava-30.1.1-jre.jar,\
                lib/google-java-format-1.9.jar

eclipse_plugin/pom.xml

@@ -37,7 +37,7 @@
 
     <!-- specific library versions; must match declarations in build.properties and META-INF/MANIFEST.MF -->
     <google-java-format.version>1.9</google-java-format.version>
-    <guava.version>28.1-jre</guava.version>
+    <guava.version>30.1.1-jre</guava.version>
   </properties>
 
   <dependencies>

pom.xml

@@ -90,7 +90,7 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <java.version>1.8</java.version>
-    <guava.version>30.0-jre</guava.version>
+    <guava.version>30.1.1-jre</guava.version>
     <truth.version>1.0</truth.version>
     <checker.version>3.6.1</checker.version>
     <errorprone.version>2.7.1</errorprone.version>