improvement: Further heuristic improvements #13735

Job	Run time
windows-latest jdk-17 unit tests 1 / 2	26m 12s
Gradle MacOS integration	13m 12s
windows-latest jdk-17 unit tests 2 / 2	22m 53s
macOS-12 jdk-17 unit tests 1 / 2	41m 24s
Sbt integration	46m 20s
macOS-12 jdk-17 unit tests 2 / 2	38m 37s
Maven integration	8m 41s
ubuntu-latest jdk-17 unit tests 1 / 2	19m 39s
Gradle integration	8m 31s
ubuntu-latest jdk-17 unit tests 2 / 2	20m 2s
Scala CLI integration	13m 1s
Mill integration	46m 41s
Bazel integration	10m 28s
LSP integration tests	33m 39s
Scala cross tests	34m 15s
Formatting	36s
Scalafix and docs	5m 17s
Sbt-metals/scripted jdk11	2m 40s
Scala javapc tests	2m 23s
Scala 2.11 cross tests	4m 13s
MiMa	49s
	6h 39m 33s

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