fix(deps): update dependency com.google.api.grpc:proto-google-cloud-bigquerydatatransfer-v1 to v2.3.7 (#8244)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.api.grpc:proto-google-cloud-bigquerydatatransfer-v1](https://togithub.com/googleapis/java-bigquerydatatransfer/proto-google-cloud-bigquerydatatransfer-v1) ([source](https://togithub.com/googleapis/java-bigquerydatatransfer)) | `2.3.7-SNAPSHOT` -> `2.3.7` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-bigquerydatatransfer-v1/2.3.7/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-bigquerydatatransfer-v1/2.3.7/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-bigquerydatatransfer-v1/2.3.7/compatibility-slim/2.3.7-SNAPSHOT)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-bigquerydatatransfer-v1/2.3.7/confidence-slim/2.3.7-SNAPSHOT)](https://docs.renovatebot.com/merge-confidence/) |

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java-bigquerydatatransfer/google-cloud-bigquerydatatransfer-bom/pom.xml

@@ -63,7 +63,7 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-bigquerydatatransfer-v1</artifactId>
-        <version>2.3.7-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-bigquerydatatransfer-v1:current} -->
+        <version>2.3.7</version><!-- {x-version-update:proto-google-cloud-bigquerydatatransfer-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>

java-bigquerydatatransfer/pom.xml

@@ -68,7 +68,7 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-bigquerydatatransfer-v1</artifactId>
-        <version>2.3.7-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-bigquerydatatransfer-v1:current} -->
+        <version>2.3.7</version><!-- {x-version-update:proto-google-cloud-bigquerydatatransfer-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>