deps: update shared dependencies (#1703)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.protobuf:protoc](https://developers.google.com/protocol-buffers/) ([source](https://togithub.com/protocolbuffers/protobuf)) | `3.21.12` -> `3.22.2` | [![age](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protoc/3.22.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protoc/3.22.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protoc/3.22.2/compatibility-slim/3.21.12)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protoc/3.22.2/confidence-slim/3.21.12)](https://docs.renovatebot.com/merge-confidence/) |
| [com.google.cloud:google-cloud-shared-dependencies](https://togithub.com/googleapis/gapic-generator-java) | `3.6.0` -> `3.7.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/3.7.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/3.7.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/3.7.0/compatibility-slim/3.6.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/3.7.0/confidence-slim/3.6.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v3.22.2`](https://togithub.com/protocolbuffers/protobuf/compare/v3.22.1...v3.22.2)

[Compare Source](https://togithub.com/protocolbuffers/protobuf/compare/v3.22.1...v3.22.2)

### [`v3.22.1`](https://togithub.com/protocolbuffers/protobuf/compare/v3.22.0...v3.22.1)

[Compare Source](https://togithub.com/protocolbuffers/protobuf/compare/v3.22.0...v3.22.1)

### [`v3.22.0`](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.12...v3.22.0)

[Compare Source](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.12...v3.22.0)

</details>

---

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google-cloud-bigtable-deps-bom/pom.xml

@@ -66,7 +66,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-shared-dependencies</artifactId>
-        <version>3.6.0</version>
+        <version>3.7.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>

google-cloud-bigtable/pom.xml

@@ -39,7 +39,7 @@
 
     <!-- These are needed to compile the protobuf used by Changestream merging acceptance test. -->
     <test-protoc-grpc.version>1.54.0</test-protoc-grpc.version>
-    <test-protoc.version>3.21.12</test-protoc.version>
+    <test-protoc.version>3.22.2</test-protoc.version>
   </properties>
 
   <dependencyManagement>