docs: update supported versions in SECURITY.md

Additional Information

Updates the supported versions list in SECURITY.md

[x] I have performed a self-review of my own code (note: N/A)
[x] I have commented my code, particularly in hard-to-understand areas (note: N/A)
[x] I have added or updated relevant unit/integration/functional/e2e tests (note: N/A)
[x] I have made corresponding changes to the documentation
[x] I have assigned this pull request to a milestone (for repository code-owners and collaborators only)