deps: update dependency com.google.api.grpc:proto-google-cloud-bigqueryconnection-v1 to v2.7.0 (#2366)

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Author: renovate-bot

pom.xml

@@ -188,7 +188,7 @@
  <dependency>
  <groupId>com.google.api.grpc</groupId>
  <artifactId>proto-google-cloud-bigqueryconnection-v1</artifactId>
- <version>2.6.0</version>
+ <version>2.7.0</version>
  <scope>test</scope>
  </dependency>
  </dependencies>