Disable JIRA worklog notifications for GitHub PRs #586

Job	Run time
Linux (JDK 8), Avatica main	12m 55s
Linux (JDK 11), Oldest Guava, Pacific/Chatham Timezone	3m 50s
Linux (JDK 8)	4m 10s
Windows (JDK 11)	5m 3s
Linux (JDK 11), Middle-Aged Guava	3m 54s
Linux (JDK 11), Calcite Minimum Guava, America/New_York Timezone	3m 56s
Linux (JDK 11), Newest Guava	3m 52s
Linux (JDK 17)	4m 8s
Linux (JDK 19)	3m 53s
macOS (JDK 19)	7m 23s
	53m 4s

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