Merge pull request #8 from tacaswell/harden_gha

CI: Harden GHA configuration

Author: isaacrobinson2000

.github/dependabot.yml

@@ -0,0 +1,7 @@
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"      # Location of your workflow files
+    schedule:
+      interval: "weekly"  # Options: daily, weekly, monthly

.github/workflows/codeql.yml

@@ -25,6 +25,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+        with:
+          persist-credentials: false
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2

.github/workflows/pytest.yml

@@ -1,5 +1,7 @@
 
 name: Validate Python Code
+permissions:
+  contents: read
 
 on:
   push:
@@ -21,6 +23,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
+        with:
+          persist-credentials: false
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v3
         with:
@@ -65,6 +69,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
+        with:
+          persist-credentials: false
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v3
         with: