fix(ci): clear OSSF Scorecard startup_failure (#359)

Fixes the OSSF Scorecard workflow, which failed at startup on every run.

**Cause:** reusable-workflow caller missing `security-events:
write`+`id-token: write` (reusable perms are capped by the caller),
and/or an illegal `timeout-minutes` key on a `uses:` job.

**Fix:** inject caller permissions and/or drop `timeout-minutes`. Pin
preserved. Verified with actionlint. Part of an estate-wide Scorecard
remediation.

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

Author: hyperpolymath

.github/workflows/scorecard.yml

@@ -17,4 +17,3 @@ jobs:
       id-token: write
     uses: hyperpolymath/standards/.github/workflows/scorecard-reusable.yml@e9c8888769a703924cc3c0d717900960d78aea00
     secrets: inherit
-    timeout-minutes: 20