Bump actions/checkout from 5 to 6 (#1539) #1838

Job	Run time
Test Big Endian	7m 32s
macOS	25m 50s
Ubuntu 20.04 (Build: Debug, Compilers: gcc-7/g++-7, Shared Library: false)	15m 3s
Ubuntu 20.04 (Build: Debug, Compilers: gcc-7/g++-7, Shared Library: true)	16m 15s
Ubuntu 20.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	18m 50s
Ubuntu 20.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	17m 8s
Bazel	8m 34s
Ubuntu 20.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	29m 8s
Ubuntu 20.04 (Build: Release, Compilers: gcc-7/g++-7, Shared Library: true)	34m 4s
ASAN	9m 46s
Windows Latest (Generator: Visual Studio 17 2022, Shared Library: true)	14m 44s
Windows Latest (Generator: Visual Studio 17 2022, Shared Library: false)	15m 4s
Windows Latest (Generator: MinGW Makefiles, Shared Library: true)	33m 59s
Ubuntu 20.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	25m 17s
Ubuntu 20.04 (Build: Release, Compilers: gcc-7/g++-7, Shared Library: false)	34m 1s
Windows Latest (Generator: MinGW Makefiles, Shared Library: false)	33m 56s
UBSAN	9m 57s
	5h 49m 8s

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