[JENKINS-MAVEN] Lucene-Solr-Maven-8.x #76: POMs out of sync

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Build: https://builds.apache.org/job/Lucene-Solr-Maven-8.x/76/

No tests ran.

Build Log:
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BUILD FAILED
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-8.x/build.xml:672: The following error occurred while executing this line:
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-8.x/build.xml:209: The following error occurred while executing this line:
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-8.x/lucene/build.xml:406: The following error occurred while executing this line:
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-8.x/lucene/common-build.xml:658: Error deploying artifact 'org.apache.lucene:lucene-solr-grandparent:pom': Error retrieving previous build number for artifact 'org.apache.lucene:lucene-solr-grandparent:pom': repository metadata for: 'snapshot org.apache.lucene:lucene-solr-grandparent:8.1.0-SNAPSHOT' could not be retrieved from repository: apache.snapshots.https due to an error: Error transferring file: Server returned HTTP response code: 503 for URL: https://repository.apache.org/content/repositories/snapshots/org/apache/lucene/lucene-solr-grandparent/8.1.0-SNAPSHOT/maven-metadata.xml

Total time: 13 minutes 56 seconds
Build step 'Invoke Ant' marked build as failure
Email was triggered for: Failure - Any
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