ci(governance): bump governance-reusable.yml pin to include hypatia#566 baseline fix (#353)

This repo's pin predates `hyperpolymath/standards` PRs #455/#464/#466,
which fixed the "Validate Hypatia Baseline" job to actually consult
`.hypatia-baseline.json`'s content instead of failing on any raw finding
count regardless of whether it was already reviewed and accepted.

Without this bump, this repo keeps re-failing Governance on
already-accepted findings indefinitely — the fix has existed on
`standards` main since 2026-07-03, this repo just wasn't pinned to it
yet.

Mechanical pin bump, same pattern as the estate-wide Rust CI re-pin fix
from 2026-07-01.

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

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/governance.yml

@@ -31,5 +31,5 @@ permissions:
 
 jobs:
   governance:
-    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@e9c8888769a703924cc3c0d717900960d78aea00 # main 2026-06-27
+    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@412a7031577112b31ee287cc6060179d638d6500 # main 2026-06-27
     timeout-minutes: 30