ORC-1776: Remove `MacOS 12` from GitHub Action CI and docs #4219

Job	Run time
Javadoc generation	1m 31s
Docker debian11	19m 11s
Java 17 and clang++ on ubuntu-22.04	20m 58s
Docker debian12	20m 43s
C++ format check	8m 35s
License Check	30s
Docker ubuntu24	19m 58s
Java 21 and clang++ on ubuntu-22.04	20m 30s
Docker fedora37	19m 2s
Java 17 and clang++ on ubuntu-24.04	21m 5s
Docker oraclelinux9	19m 55s
C++ Test on macOS (13)	8m 32s
SIMD programming using C++ intrinsic functions on ubuntu-22.04	8m 54s
Java 21 and clang++ on ubuntu-24.04	21m 41s
C++ Test on macOS (14)	3m 37s
Java 17 and clang++ on macos-13	21m 59s
C++ General Test on Windows	5m 39s
Java 21 and clang++ on macos-13	23m 22s
C++ AVX512 Test on Windows	5m 43s
Java 17 and clang++ on macos-14	13m 58s
Java 21 and clang++ on macos-14	13m 16s
Java 17 and g++ on ubuntu-22.04	21m 3s
	5h 19m 42s

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