chore: update GitHub Actions workflows with version pinning and permission adjustments

.github/workflows/canary.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
           ref: ${{ github.event.workflow_run.head_sha }}
@@ -29,7 +29,7 @@ jobs:
           echo "tag=$tag" >> "$GITHUB_OUTPUT"
 
       - name: Generate changelog since last release tag
-        uses: orhun/git-cliff-action@v4
+        uses: orhun/git-cliff-action@f50e11560dce63f7c33227798f90b924471a88b5 # v4.8.0
         id: cliff
         with:
           config: cliff.toml
@@ -51,7 +51,7 @@ jobs:
           printf "%b" "$header" | cat - CHANGES.md > CHANGES.tmp && mv CHANGES.tmp CHANGES.md
 
       - name: Download artifacts from CI run
-        uses: dawidd6/action-download-artifact@v6
+        uses: dawidd6/action-download-artifact@b6e2e70617bc3265edd6dab6c906732b2f1ae151 # v21
         with:
           run_id: ${{ github.event.workflow_run.id }}
           path: artifacts/
@@ -78,7 +78,7 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Create canary pre-release
-        uses: ncipollo/release-action@v1
+        uses: ncipollo/release-action@339a81892b84b4eeb0f6e744e4574d79d0d9b8dd # v1.21.0
         with:
           tag: canary
           name: "Canary ${{ steps.last_tag.outputs.tag }}+${{ github.event.workflow_run.head_sha }}"