CICD

Bump symbolic-demangle from 12.11.1 to 12.12.0 #1908

Job	Run time
Test library (macos-latest, stable)	3m 8s
Lint	6m 21s
Test library (macos-latest, nightly)	3m 8s
Test coverage (gcc-10, clang-11)	4m 16s
Test library (ubuntu-latest, stable)	3m 8s
Test coverage (gcc-11, clang-12)	4m 23s
Test library (ubuntu-latest, nightly)	3m 11s
Test coverage (gcc-11, clang-13)	4m 5s
Test library (windows-latest, stable)	4m 16s
Test library (windows-latest, nightly)	4m 37s
	40m 33s

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