Bump actions/checkout from 2 to 4 #47

Job	Run time
Build the documentation	20s
Validate coverage	37s
Python: 3.9-x64 on ubuntu-22.04	19s
Lint the package	21s
Python: 3.9-x64 on windows-latest	53s
Python: 3.9-x64 on macos-13	27s
Python: 3.9-arm64 on macos-14	15s
Python: 3.10-x64 on ubuntu-22.04	20s
Python: 3.10-x64 on windows-latest	1m 2s
Python: 3.10-x64 on macos-13	29s
Python: 3.10-arm64 on macos-14	16s
Python: 3.11-x64 on ubuntu-22.04	17s
Python: 3.11-x64 on windows-latest	46s
Python: 3.11-x64 on macos-13	26s
Python: 3.11-x64 on macos-14	38s
Python: 3.11-arm64 on macos-14	14s
Python: 3.12-x64 on ubuntu-22.04	19s
Python: 3.12-x64 on windows-latest	44s
Python: 3.12-x64 on macos-13	38s
Python: 3.12-x64 on macos-14	32s
Python: 3.12-arm64 on macos-14	19s
Python: 3.13-x64 on ubuntu-22.04	29s
Python: 3.13-x64 on windows-latest	1m 29s
Python: 3.13-x64 on macos-13	32s
Python: 3.13-x64 on macos-14	56s
Python: 3.13-arm64 on macos-14	17s
Python: pypy-3.9-x64 on ubuntu-22.04	37s
Python: pypy-3.9-x64 on windows-latest	1m 10s
Python: pypy-3.9-x64 on macos-13	45s
Python: pypy-3.9-x64 on macos-14	1m 15s
Python: pypy-3.9-arm64 on macos-14	47s
Python: pypy-3.10-x64 on ubuntu-22.04	38s
Python: pypy-3.10-x64 on windows-latest	1m 33s
Python: pypy-3.10-x64 on macos-13	49s
Python: pypy-3.10-x64 on macos-14	1m 32s
Python: pypy-3.10-arm64 on macos-14	1m 1s
	24m 2s

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