Update phst_update_workspace_snippets digest to a2050ff #3134

Job	Run time
Test (7.2.1, ubuntu-latest, gcc)	2m 3s
Test (7.2.1, ubuntu-latest, clang)	2m 33s
Test (7.2.1, macos-latest, clang)	2m 46s
Test (7.2.1, windows-latest, msvc)	3m 54s
Test (7.4.1, ubuntu-latest, gcc)	2m 12s
Test (7.4.1, ubuntu-latest, clang)	2m 11s
Test (7.4.1, macos-latest, clang)	2m 45s
Test (7.4.1, windows-latest, msvc)	3m 44s
Test (8.0.0, ubuntu-latest, gcc)	1m 59s
Test (8.0.0, ubuntu-latest, clang)	2m 10s
Test (8.0.0, macos-latest, clang)	2m 54s
Test (8.0.0, windows-latest, msvc)	3m 12s
Test (latest, ubuntu-latest, gcc)	1m 57s
Test (latest, ubuntu-latest, clang)	2m 1s
Test (latest, macos-latest, clang)	2m 30s
Test (latest, windows-latest, msvc)	3m 46s
	42m 37s

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