chore(ci): bump standards reusable pins past #219 governance fix (#64)

## Root cause

`.github/workflows/governance.yml:34` pins
`governance-reusable.yml@3ec2e85` (2026-05-25) — predates
[standards#219](hyperpolymath/standards#219)
(`ad366b6`, 2026-05-27) which fixes `workflow_sha` resolution. Without
this fix, `governance / Language / package anti-pattern policy` fails
with exit 128 on the inner self-checkout.

## Pins changed

| File | Before | After |
|---|---|---|
| `.github/workflows/governance.yml:34` | `3ec2e85` (pre-#219) |
`5eb28d7` (standards/main, post-#219) |
| `.github/workflows/hypatia-scan.yml:28` | `97df762` (orphan PR-branch
SHA) | `5eb28d7` (canonical main; file unchanged since #193) |

## Auto-merge

SQUASH.

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

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/governance.yml

@@ -31,4 +31,4 @@ permissions:
 
 jobs:
   governance:
-    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@3ec2e85cc1d54ec2ab20a84fcba96e5008545925 # main 2026-05-25
+    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@5eb28d7d8790d5389b7b6a5233fe6265a775e3d0 # main 2026-05-27 (post-#219 workflow_sha fix)

.github/workflows/hypatia-scan.yml

@@ -25,5 +25,5 @@ permissions:
 
 jobs:
   hypatia:
-    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@97df762107501909f50bb770e9bc200b6c415600
+    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@5eb28d7d8790d5389b7b6a5233fe6265a775e3d0
     secrets: inherit