Allow a maximum of five ongoing queries per table #6685

Job	Run time
launcher (ubuntu-20.04)	1m 55s
package_builder (ubuntu-20.04)	42s
launcher (macos-13)	4m 24s
package_builder (macos-13)	1m 18s
launcher (windows-latest)	6m 7s
package_builder (windows-latest)	4m 12s
Version Baseline	4s
test (ubuntu-20.04)	2m 45s
test (macos-13)	7m 28s
test (windows-latest)	6m 1s
Exec Test (ubuntu-20.04)	8s
Exec Test (ubuntu-22.04)	7s
Exec Test (macos-13)	16s
Exec Test (macos-14)	28s
Exec Test (macos-15)	47s
Exec Test (windows-2019)	15s
Exec Test (windows-2022)	15s
Store Artifacts (linux)	8s
Store Artifacts (macos)	13s
Store Artifacts (windows)	6s
ci_mergeable	1s
	37m 40s

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