CI/CD

ci: bump actions/attest-build-provenance from 1.4.4 to 2.1.0 #5631

Job	Run time
pre-commit	22s
test coffea-taskvine (3.11)	2m 38s
test coffea (ubuntu-latest) - python 3.9, JDK17	30m 29s
test coffea (ubuntu-latest) - python 3.12, JDK17	43m 11s
test coffea (macOS-latest) - python 3.9, JDK17	16m 33s
test coffea (macOS-latest) - python 3.12, JDK17	18m 5s
test coffea (windows-latest) - python 3.9, JDK17	31m 33s
test coffea (windows-latest) - python 3.12, JDK17	37m 49s
pass	1s
deploy release	0s
	3h 0m 41s

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