Luacheck: ignore W113 too; GitHub Action: specify permissions

Ignoring W113 safely avoids warnings due to Awesome modules not found by
Luacheck.

Signed-off-by: Luca Capezzuto <luca.cpz@gmail.com>

.github/workflows/main.yml

@@ -1,12 +1,18 @@
-name: Luacheck
+name: Lain
+
 on: [push]
-jobs: 
-  Luacheck_Tests:
+
+permissions:
+  contents: read
+
+jobs:
+  linting:
     runs-on: ubuntu-latest
     steps:
-      - run: echo "Running tests triggered by a ${{ github.event_name }} event."
-      - run: echo "Testing ${{ github.ref }} from ${{ github.repository }} on ${{ runner.os }}"
+      - run: |
+        echo "Running tests triggered by a ${{ github.event_name }} event."
+        echo "Testing ${{ github.ref }} from ${{ github.repository }} on ${{ runner.os }}"
       - name: Check out code
         uses: actions/checkout@v3
       - name: Run tests
-        uses: lunarmodules/luacheck@v0 
+        uses: lunarmodules/luacheck@v0

.luacheckrc

@@ -6,6 +6,8 @@ globals = {
     "client", "screen", "mouse"
 }
 
+-- https://luacheck.readthedocs.io/en/stable/warnings.html
 ignore = {
-    "131",
+    "113",
+    "131"
 }