deps: update dependency com.google.protobuf:protobuf-java-util to v3.20.1 (#814)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.protobuf:protobuf-java-util](https://developers.google.com/protocol-buffers/) ([source](https://togithub.com/protocolbuffers/protobuf)) | `3.20.0` -> `3.20.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.20.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.20.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.20.1/compatibility-slim/3.20.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.20.1/confidence-slim/3.20.0)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

README.md

@@ -62,13 +62,13 @@ implementation 'com.google.cloud:google-cloud-securitycenter'
 If you are using Gradle without BOM, add this to your dependencies
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-securitycenter:2.5.4'
+implementation 'com.google.cloud:google-cloud-securitycenter:2.5.5'
 ```
 
 If you are using SBT, add this to your dependencies
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-securitycenter" % "2.5.4"
+libraryDependencies += "com.google.cloud" % "google-cloud-securitycenter" % "2.5.5"
 ```
 
 ## Authentication

samples/install-without-bom/pom.xml

@@ -42,7 +42,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.20.0</version>
+      <version>3.20.1</version>
     </dependency>
 
     <dependency>

samples/snapshot/pom.xml

@@ -40,7 +40,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.20.0</version>
+      <version>3.20.1</version>
     </dependency>
 
     <dependency>

samples/snippets/pom.xml

@@ -53,7 +53,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.20.0</version>
+      <version>3.20.1</version>
     </dependency>
 
     <dependency>