ci: Pin all workflows

Author: dekimsey

.github/workflows/test.yml

@@ -4,11 +4,11 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - uses: DeterminateSystems/nix-installer-action@main
-    - uses: DeterminateSystems/magic-nix-cache-action@main
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+    - uses: DeterminateSystems/nix-installer-action@21a544727d0c62386e78b4befe52d19ad12692e3 # v17
+    - uses: DeterminateSystems/magic-nix-cache-action@def9f5a5c6a6b8751c0534e8813a5d0ad2635660 # v11
     - run: nix develop --command bash -c "lint && integration"
-    - uses: codecov/[email protected]
+    - uses: codecov/codecov-action@1e68e06f1dbfde0e4cefc87efeba9e4643565303 # v5.1.2
       with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: test/coverage.out