deps: update dependency com.google.protobuf:protobuf-java-util to v3.19.3 (googleapis#973)

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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)) | `3.19.2` -> `3.19.3` | [![age](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.19.3/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.19.3/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.19.3/compatibility-slim/3.19.2)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java-util/3.19.3/confidence-slim/3.19.2)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>protocolbuffers/protobuf</summary>

### [`v3.19.3`](https://togithub.com/protocolbuffers/protobuf/releases/v3.19.3)

[Compare Source](https://togithub.com/protocolbuffers/protobuf/compare/v3.19.2...v3.19.3)

##### Python

-   Fix missing Windows wheel for Python 3.10 on PyPI

</details>

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Author: renovate-bot

samples/install-without-bom/pom.xml

@@ -75,7 +75,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.19.2</version>
+      <version>3.19.3</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>

samples/snapshot/pom.xml

@@ -61,7 +61,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.19.2</version>
+      <version>3.19.3</version>
     </dependency>
 
     <dependency>

samples/snippets/pom.xml

@@ -72,7 +72,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.19.2</version>
+      <version>3.19.3</version>
     </dependency>
 
     <dependency>