CPAN::Meta v3 and SBOM data

[robrwo]

Let's keep track of progress regarding updates to the CPAN::Meta::Spec.

Relevant tickets:

• Add fields required by Cyber Resiliency Act Annex II Perl-Toolchain-Gang/CPAN-Meta#137
• x_ field for source git commit Perl-Toolchain-Gang/CPAN-Meta#133
• SPEC: create standard key for communicating dynamic dependencies to vendors/packagers Perl-Toolchain-Gang/CPAN-Meta#112
• feature request: handle non perl dependencies Perl-Toolchain-Gang/CPAN-Meta#79
• spec: flag to indicate distribution deprecation status Perl-Toolchain-Gang/CPAN-Meta#50
• document all known x_ fields Perl-Toolchain-Gang/CPAN-Meta#51

Here are all the issues with the "spec" label.