[openssl/general-policies] 037144: Promote linux-aarch64 to a secondary platform

[Tom Cosgrove]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/general-policies
  Commit: 037144230b8396e6ce43c0e7e973600c9f450d03
      https://github.com/openssl/general-policies/commit/037144230b8396e6ce43c0e7e973600c9f450d03
  Author: Tom Cosgrove <tom.cosgrove at arm.com>
  Date:   2023-11-08 (Wed, 08 Nov 2023)

  Changed paths:
    M policy-supplemental/platforms.md

  Log Message:
  -----------
  Promote linux-aarch64 to a secondary platform

It is regularly tested through the project CI on a system provided by Arm,
and I support it (with my colleagues @zorrorffm and @xkqian)