Ruby 3.4: download ældre versioner

Changed
- Update to ruby-3.4.12, see release notes.

Changed
- Remove eMudhra's "emSign ECC Root CA - G3" from the SSL CA certificate list. #491
8 of their intermediate certificates were compromized.
- Change installer name and version strings to match the expectation of the Microsoft Store.

Changed
- Update to ruby-3.4.11, see release notes.
- Update the SSL CA certificate list.

Added
- Add more text to the startmenu buttons and more color to outputs.
Changed
- Update to ruby-3.4.10, see release notes.
- Update the SSL CA certificate list.
- Change libssl-3.dll to libssl-3-arm64.dll on ARM64.

Added
- Add the missing rdbg executable. #474
Changed
- Update to ruby-3.4.9, see release notes.
- Shrink the 5 app icons to only one and add a subsequent console-based startmenu.
One icon only is a requirement of Microsoft to provide an app in the Microsoft Store.
- Compact ENV display when running ridk enable. #470
- Fix possible crash in ridk enable when searching the Windows registry.
- Fix detection of MSYS2 in a non-standard location. #445, #350
- Check and add directory etc/ssl/certs in c_rehash.rb. #472
- Preliminary support for MSYS2 environment clang64 . #471
- Update links to point to the correct repository. #463
Removed
- Remove libgcc_s_seh-1.dll. It is no longer necessary. #467

Changed
- Update to ruby-3.4.8, see release notes.
- Use msys2 headless installer in ridk install 1 and install into ruby's base directory. ruby/date#459
- Extend c_rehash.rb helper script to update all three locations of SSL CA certificates #461
- Update the SSL CA certificate list.

Changed
- Update to ruby-3.4.7, see release notes.
- Patch the bundled openssl gem to fix compatibility with OpenSSL-3.6.0.
See https://github.com/ruby/openssl/pull/950/commits/e8481cd687840f6d8247ca70967c1de47093ecb8

Changed
- Update to ruby-3.4.6, see release notes.

Changed
- Update to ruby-3.4.5, see release notes.
- Update the SSL CA certificate list.

Changed
- Fix issue with -std=c99 which broke install of some gems. 439