chore(codeowners): drop .github/workflows/ line - standards#55 follow-up (#63)

Follow-up to the wildcard drop (already merged). Drops the path-specific
.github/workflows/ @hyperpolymath line so Dependabot github-actions
ecosystem PRs no longer auto-request review via CODEOWNERS.

Policy decided in hyperpolymath/standards#55: solo-owned repos get no
functional gating from the line.

idaptik (co-owner @JoshuaJewell), reasonably-good-token-vault, and
protocol-squisher are NOT in this batch: token-vault and
protocol-squisher already do not have the line, and idaptik needs
JoshuaJewell's input.

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

Author: hyperpolymath

.github/CODEOWNERS

@@ -8,6 +8,5 @@
 
 # Security-sensitive files require explicit review
 SECURITY.md @hyperpolymath
-.github/workflows/ @hyperpolymath
 Trustfile.a2ml @hyperpolymath
 .machine_readable/ @hyperpolymath