Bump actions/checkout from 5 to 6 #1845

Job	Run time
ubuntu-gcc-mbedtls	2m 38s
windows-msvc-ssl (Release)	4m 32s
windows-msvc-ssl (Debug)	3m 57s
fedora-clang-openssl	4m 9s
ubuntu-clang-openssl (ubuntu:latest, ON, Release)	2m 34s
ubuntu-clang-openssl (ubuntu:latest, ON, Debug)	2m 25s
fedora-gcc-openssl-no-psl	2m 43s
ubuntu-clang-openssl (ubuntu:latest, OFF, Debug)	2m 49s
ubuntu-clang-openssl (ubuntu:rolling, ON, Release)	2m 37s
ubuntu-clang-openssl (ubuntu:latest, OFF, Release)	3m 12s
ubuntu-clang-openssl (ubuntu:rolling, OFF, Debug)	3m 42s
ubuntu-clang-openssl (ubuntu:rolling, ON, Debug)	2m 20s
windows-msvc-openssl	5m 38s
fedora-gcc-openssl (ON, Release)	2m 13s
fedora-gcc-openssl (ON, Debug)	1m 54s
fedora-gcc-openssl (OFF, Debug)	2m 21s
fedora-gcc-openssl (OFF, Release)	3m 6s
fedora-gcc-ssl-sanitizer (UdefSan)	2m 13s
fedora-gcc-ssl-sanitizer (AddrSan)	2m 20s
ubuntu-gcc-openssl (ubuntu:latest, ON, Debug)	2m 2s
fedora-gcc-ssl-sanitizer (LeakSan)	2m 12s
ubuntu-gcc-openssl (ubuntu:rolling, ON, Release)	2m 20s
ubuntu-gcc-openssl (ubuntu:latest, ON, Release)	2m 12s
ubuntu-gcc-openssl (ubuntu:latest, OFF, Debug)	2m 24s
ubuntu-gcc-openssl (ubuntu:rolling, ON, Debug)	2m 1s
ubuntu-clang-openssl (ubuntu:rolling, OFF, Release)	3m 5s
ubuntu-gcc-openssl (ubuntu:latest, OFF, Release)	2m 49s
macos-clang-darwinssl	1m 54s
ubuntu-gcc-openssl (ubuntu:rolling, OFF, Release)	3m 1s
ubuntu-gcc-openssl (ubuntu:rolling, OFF, Debug)	2m 27s
macos-clang-openssl	3m 33s
macos-clang-openssl-boost	2m 14s
macos-clang-ssl (Debug)	1m 47s
macos-clang-ssl (Release)	2m 9s
	1h 33m 33s

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