Merge dashpay#6552: docs: update supported versions in SECURITY.md

f8811df docs: update supported versions in SECURITY.md (Kittywhiskers Van Gogh)

Pull request description:

  ## Additional Information

  Updates the supported versions list in `SECURITY.md`

  ## Checklist:

  - [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)_

ACKs for top commit:
  UdjinM6:
    utACK f8811df

Tree-SHA512: 3b10dd8ea49ea63d94b9a7df0cc95f5ae0d8fe8a6e8455d09478082bb397f63025953f2786e021730a4951763295c882b9b26a61ca691fccc44072c12da52072

SECURITY.md

@@ -4,7 +4,7 @@
 
 | Version | Supported          |
 | ------- | ------------------ |
-| 22      | :white_check_mark: |
+| 22.x    | :white_check_mark: |
 | < 22    | :x:                |
 
 ## Reporting a Vulnerability