build(deps-dev): bump com.google.code.gson:gson from 2.14.0 to 2.15.0 in /block-kit (#100)

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Author: dependabot[bot]

block-kit/pom.xml

@@ -74,7 +74,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.14.0</version>
+      <version>2.15.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>