[CI] Do not run 'pre-commit' job on post commit (#500) #3219

Job	Run time
lint / python-lint	8s
lint / clang-format	11s
lint / shell-lint	13s
mac / clang-build (Release)	2m 34s
mac / clang-build (Debug)	2m 41s
windows / msvc-build (Release)	3m 49s
windows / clang-build	2m 16s
windows / msvc-build (Debug)	5m 21s
ubuntu / pre-commit	-1s
ubuntu / gcc-build	0s
ubuntu / clang-build	0s
ubuntu / clang-sanitizer-build	0s
ubuntu / clang-test	0s
ubuntu / gcc-test	0s
ubuntu / gcc-test-extended	0s
ubuntu / clang-test-extended	0s
ubuntu / clang-sanitizer-test	0s
ubuntu / gcc-build-codecov	-1s
ubuntu / clang-sanitizer-test-extended	-1s
windows / clang-test	2m 15s
mac / clang-test	3m 21s
windows / clang-test-extended	1m 56s
windows / msvc-test	2m 53s
mac / clang-test-extended	2m 33s
windows / msvc-test-extended	2m 51s
perf	0s
pages	0s
	32m 59s

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