Update actions

Author: theletterf

.github/workflows/check-links.yml

@@ -28,7 +28,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: Set up Python
         uses: actions/setup-python@v3
         with:

.github/workflows/test-docs.yml

@@ -26,7 +26,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: Set up Python
         uses: actions/setup-python@v3
         with:

.github/workflows/vale-linter.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: macos-latest
     name: Lint changed files
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Download lastest Splunk style

requirements.txt

@@ -18,7 +18,6 @@ pytz==2023.3
 PyYAML==6.0.1
 requests==2.32.2
 setuptools==68.1.2
-six==1.16.0
 snowballstemmer==2.2.0
 Sphinx==5.1.1
 sphinx-copybutton==0.5.2