fix(ci): make OSSF Scorecard caller valid (perms / drop timeout-minutes) (#44)

Reusable scorecard caller failed at startup: needed
security-events+id-token (reusable perms capped to caller grant) and/or
an illegal timeout-minutes on the uses: job. Verified with actionlint.
Pin preserved.

<!--
SPDX-License-Identifier: CC-BY-SA-4.0
Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
-->
## Summary

<!-- Briefly describe what this PR does and why. Link to related issues
with "Closes #N". -->

## Changes

<!-- List the key changes introduced by this PR. -->

-

## RSR Quality Checklist

<!-- Check all that apply. PRs that fail required checks will not be
merged. -->

### Required

- [ ] Tests pass (`just test` or equivalent)
- [ ] Code is formatted (`just fmt` or equivalent)
- [ ] Linter is clean (no new warnings or errors)
- [ ] No banned language patterns (no TypeScript, no npm/bun, no
Go/Python)
- [ ] No `unsafe` blocks without `// SAFETY:` comments
- [ ] No banned functions (`believe_me`, `unsafeCoerce`, `Obj.magic`,
`Admitted`, `sorry`)
- [ ] SPDX license headers present on all new/modified source files
- [ ] No secrets, credentials, or `.env` files included

### As Applicable

- [ ] `.machine_readable/6a2/STATE.a2ml` updated (if project state
changed)
- [ ] `.machine_readable/6a2/ECOSYSTEM.a2ml` updated (if integrations
changed)
- [ ] `.machine_readable/6a2/META.a2ml` updated (if architectural
decisions changed)
- [ ] Documentation updated for user-facing changes
- [ ] `TOPOLOGY.md` updated (if architecture changed)
- [ ] `CHANGELOG` or release notes updated
- [ ] New dependencies reviewed for license compatibility (MPL-2.0 /
MPL-2.0)
- [ ] ABI/FFI changes validated (`src/interface/abi/` and
`src/interface/ffi/` consistent)

## Testing

<!-- Describe how you tested these changes. -->

## Screenshots

<!-- If applicable, add screenshots or terminal output demonstrating the
change. -->

Signed-off-by: Jonathan D.A. Jewell <6759885+hyperpolymath@users.noreply.github.com>

Author: hyperpolymath