Update Truststores

[drwetter]

• Mozilla: 2024-7-02
• Debian 12, ca-certificates from 20230311
• JDK 21.04
• Apple via https://github.com/apple-oss-distributions/security_certificates (according to git log latest change Fri Dec 15 00:44:35 2023)
• Microsoft via CertUtil (date of this PR)

Modified Readme to reflect that the Apple CA certificates are better to retrieve from GH and clarified minor things.

This also fixes #2525, where >=2 certificates were missing.

Describe your changes

Please refer to an issue here or describe the change thoroughly in your PR.

What is your pull request about?

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Typo fix
• Documentation update
• Update of other files

If it's a code change please check the boxes which are applicable

• For the main program: My edits contain no tabs and the indentation is five spaces
• I've read CONTRIBUTING.md and Coding_Convention.md
• I have tested this fix against >=2 hosts and I couldn't spot a problem
• I have tested this new feature against >=2 hosts which show this feature and >=2 host which does not (in order to avoid side effects) . I couldn't spot a problem
• For the new feature I have made corresponding changes to the documentation and / or to help()
• If it's a bigger change: I added myself to CREDITS.md (alphabetical order) and the change to CHANGELOG.md