update for common plugin v0.2.0

- rename keys folder to cert
- update build.gradle.kts to use certificate plugin
- update catalog version

src/main/resources/application.yml

@@ -11,7 +11,7 @@ spring:
         version: "%APP_BUILD_OS_VERSION%"
 
 jwt:
-  private-key: keys/private_key.pem
+  private-key: cert/private_key.pem
 
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