Pin github action to sha releases

Author: BarbUk

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
     - name: Install greadlink
       if: startsWith(runner.os, 'macOS')
       run: brew install coreutils
@@ -26,9 +26,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: 3.8
     - name: Install docs dependencies
@@ -40,13 +40,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
     - name: Set up Go
-      uses: actions/setup-go@v4
+      uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
       with:
         go-version: 1.21.0
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: 3.8
     - name: Install shfmt
@@ -71,12 +71,12 @@ jobs:
 
     steps:
       - name: Repository checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
 
       - id: ShellCheck
         name: Differential ShellCheck
-        uses: redhat-plumbers-in-action/differential-shellcheck@v5
+        uses: redhat-plumbers-in-action/differential-shellcheck@d965e66ec0b3b2f821f75c8eff9b12442d9a7d1e # v5.5.6
         with:
           token: ${{ secrets.GITHUB_TOKEN }}