chore: add permissions block to workflow(s).

Author: rwiker

.github/workflows/build_docs.yaml

@@ -12,6 +12,8 @@ on:
 jobs:
   build_pywheels:
     name: Build docs with Python ${{ matrix.python-version }} on ${{ matrix.os }}
+    permissions:
+      contents: read
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:

.github/workflows/linting.yml

@@ -7,6 +7,8 @@ on:
 jobs:
   ruff-check:
     name: Run ruff lint and format checks
+    permissions:
+      contents: read
     runs-on: ubuntu-latest
 
     steps: