CI: using hashes and full versions for actions

Author: bsipocz

.github/workflows/ci_publish.yml

@@ -25,10 +25,10 @@ jobs:
     name: Publish HTML
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
 
       - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548  # v6.1.0
         with:
           python-version: '3.12'
 
@@ -51,7 +51,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: publish_html
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
 
       - name: Deploy to deployed_notebooks branch
         run: |

.github/workflows/ci_tests_run_notebooks.yml

@@ -41,9 +41,9 @@ jobs:
             os: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd  # v5.0.1
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@2e3e4b15a884dc73a63f962bff250a855150a234  #v5.1.0
+      uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548  # v6.1.0
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -61,10 +61,10 @@ jobs:
     name: Buildhtml testing
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
 
       - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548  # v6.1.0
         with:
           python-version: '3.12'