Update .github/workflows/pinact-check.yml

Author: mortenson

.github/workflows/pinact-check.yml

@@ -0,0 +1,15 @@
+name: Check that actions are pinned to hashes
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  check-pinact:
+    name: Run pinact check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: MercuryTechnologies/mercury-github-actions/pinact-check@aa5ebb17717cc3279eb4f9f8f7386d746246037f # v0.0.26