Update sbt-coveralls to 1.3.11 (#459) #777

Job	Run time
build ([email protected], ubuntu-latest)	9m 29s
build ([email protected], macOS-latest)	14m 27s
build ([email protected], windows-latest)	10m 36s
build (graalvm-ce-java11@21, ubuntu-latest)	9m 35s
build (graalvm-ce-java11@21, macOS-latest)	12m 22s
build (graalvm-ce-java11@21, windows-latest)	8m 33s
build ([email protected], ubuntu-latest)	11m 53s
build ([email protected], macOS-latest)	13m 38s
build ([email protected], windows-latest)	8m 18s
	1h 38m 51s

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