chore(CODEOWNERS): drop /.github/workflows/ line (Refs standards#55) (#67)

Per hyperpolymath/standards#55 decision (a) for solo-owned repos:
removes the `/.github/workflows/` CODEOWNERS line so Dependabot
`github-actions` PRs stop auto-requesting review. No functional review
gating is lost on a solo-owned repo.

Refs hyperpolymath/standards#55

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: hyperpolymath <hyperpolymath@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

Author: hyperpolymath

.github/CODEOWNERS

@@ -16,9 +16,8 @@
 /src/interfaces/ @hyperpolymath
 
 # Infrastructure and CI/CD
-/.github/workflows/ @hyperpolymath
 /.containerization/ @hyperpolymath
 /Containerfile @hyperpolymath
 
 # SCM and machine-readable metadata
-/.machine_readable/ @hyperpolymath
+/.machine_readable/ @hyperpolymath