workflows: shellcheck: Only run on *.sh

Signed-off-by: Loïc Minier <[email protected]>

Author: lool

.github/workflows/shellcheck.yml

@@ -31,5 +31,5 @@ jobs:
           fetch-depth: 0
 
       - name: Run ShellCheck
-        run: shellcheck scripts/*
+        run: shellcheck scripts/*.sh