ci: add doc/ flake lock updater

Author: srid

.github/workflows/update-flake-lock-doc.yaml

@@ -0,0 +1,21 @@
+name: update-flake-lock-doc
+on:
+  workflow_dispatch: # allows manual triggering
+  schedule:
+    - cron: '0 0 * * 0' # runs weekly on Sunday at 00:00
+
+jobs:
+  doc-lock:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - name: Update flake.lock
+        uses: DeterminateSystems/update-flake-lock@main
+        with:
+          pr-title: "Update doc/flake.lock"
+          pr-labels: |
+            automated
+          path-to-flake-dir: 'doc/'

.github/workflows/update-flake-lock.yaml renamed to .github/workflows/update-flake-lock-example.yaml

@@ -1,11 +1,11 @@
-name: update-flake-lock
+name: update-flake-lock-example
 on:
   workflow_dispatch: # allows manual triggering
   schedule:
     - cron: '0 0 * * 0' # runs weekly on Sunday at 00:00
 
 jobs:
-  lockfile:
+  example-lock:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository