Use GitHub Action Cache for `./.m2/repository`

[ERROR] Failed to execute goal on project spark-streaming-kafka-0-10_2.12: Could not resolve dependencies for project org.apache.spark:spark-streaming-kafka-0-10_2.12:jar:spark-367716: Could not transfer artifact com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.10.0 from/to central (https://repo.maven.apache.org/maven2): Failed to transfer file https://repo.maven.apache.org/maven2/com/fasterxml/jackson/datatype/jackson-datatype-jdk8/2.10.0/jackson-datatype-jdk8-2.10.0.jar with status code 503 -> [Help 1]
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[ERROR] 
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[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
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[ERROR] Re-run Maven using the -X switch to enable full debug logging.
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[ERROR] 
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[ERROR] For more information about the errors and possible solutions, please read the following articles:
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[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
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[ERROR] 
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[ERROR] After correcting the problems, you can resume the build with the command
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[ERROR]   mvn <args> -rf :spark-streaming-kafka-0-10_2.12