feat: support Ruby 3.4.1 #945

Job	Run time
build-gem	11s
Use gem to package fontist windows-latest Ruby 3.2.6 CC gcc	59m 50s
Use gem to package metanorma alpine:3.17 Ruby 3.2.6 CC gcc	27m 0s
Use gem to package fontist alpine:3.17 Ruby 3.2.6 CC gcc	25m 4s
Use gem to package metanorma ubuntu-20.04 Ruby 3.2.6 CC clang-12	17m 42s
Use gem to package metanorma macos-13 Ruby 3.2.6 CC clang	21m 22s
Use gem to package fontist ubuntu-20.04 Ruby 3.2.6 CC clang-12	15m 27s
Use gem to package fontist macos-13 Ruby 3.2.6 CC clang	17m 41s
Use gem to package metanorma macos-14 Ruby 3.2.6 CC clang	10m 40s
Use gem to package fontist macos-14 Ruby 3.2.6 CC clang	4m 10s
cross-test on ubuntu-22.04	38s
cross-test on ubuntu-24.04	33s
Release gem	0s
	3h 20m 18s

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