ci: pin github actions to full-length commit shas

Author: danielroe

.github/workflows/ci.yml

@@ -20,9 +20,9 @@ jobs:
 
     steps:
 
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       - run: corepack enable
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
         with:
           node-version: 24
           cache: "pnpm"
@@ -41,6 +41,6 @@ jobs:
 
       - name: Coverage
         if: ${{ matrix.os == 'ubuntu-latest' }}
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/provenance.yml

@@ -13,7 +13,7 @@ jobs:
   check-provenance:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           fetch-depth: 0
       - name: Check provenance downgrades

.github/workflows/release.yml

@@ -12,12 +12,12 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           fetch-depth: 0
 
       - name: Set node
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
         with:
           node-version: 24