Meta: Ignore the LibJS test runner script when linting

Making this work in the absence of bash is more cumbersome than simply
skipping it at the moment.

Meta/lint-shell-scripts.sh

@@ -10,6 +10,7 @@ for f in $(find . -path ./Root -prune -o \
     -path ./Ports -prune -o \
     -path ./.git -prune -o \
     -path ./Toolchain -prune -o \
+    -path ./Libraries/LibJS/Tests -prune -o \
     -type f | sort -u); do
     if file "$f" | grep --quiet shell; then
         {