Update linters.yml

Author: Mesteery

.github/workflows/linters.yml

@@ -109,7 +109,7 @@ jobs:
 
   lint-sh:
     if: github.event.pull_request.draft == false
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - run: shellcheck -V