Also configure renovate to automerge spotless

Author: leonardehrenfried

renovate.json5

@@ -76,7 +76,8 @@
         "org.apache.maven.plugins:maven-shade-plugin",
         "org.apache.maven.plugins:maven-compiler-plugin",
         "org.apache.maven.plugins:maven-jar-plugin",
-        "org.sonatype.plugins:nexus-staging-maven-plugin"
+        "org.sonatype.plugins:nexus-staging-maven-plugin",
+        "com.diffplug.spotless:spotless-maven-plugin"
       ],
       "schedule": "on the 23rd day of the month",
       "automerge": true