Bump actions/checkout from 4.2.0 to 4.2.1 #738

Job	Run time
cryptography-runner-rhel8	56s
cryptography-runner-rhel8-fips	51s
cryptography-runner-centos-stream9	1m 30s
cryptography-runner-centos-stream9-fips	1m 24s
cryptography-runner-fedora	1m 11s
cryptography-runner-alpine	55s
cryptography-runner-bullseye	1m 5s
cryptography-runner-bookworm	59s
cryptography-runner-trixie	54s
cryptography-runner-sid	56s
cryptography-runner-ubuntu-focal	58s
cryptography-runner-ubuntu-jammy	1m 2s
cryptography-runner-ubuntu-noble	55s
cryptography-runner-ubuntu-rolling	52s
cryptography-manylinux2014:x86_64	2m 32s
cryptography-manylinux_2_28:x86_64	2m 21s
cryptography-musllinux_1_1:x86_64	2m 12s
cryptography-musllinux_1_2:x86_64	2m 42s
cryptography-manylinux2014_aarch64	3m 0s
cryptography-manylinux_2_28:aarch64	4m 33s
cryptography-musllinux_1_1:aarch64	2m 52s
cryptography-musllinux_1_2:aarch64	2m 54s
cryptography-runner-ubuntu-rolling:aarch64	19s
cryptography-runner-alpine:aarch64	19s
	38m 12s

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