Added directory to ESLint workflow

In the eslint.yml GitHub @actions workflow, there was no path specified for which files to lint. This commit specifies that all files within the project other than dependencies (`./`) should be processed by the linter.

.github/workflows/eslint.yml

@@ -35,4 +35,4 @@ jobs:
         run: yarn --frozen-lockfile
 
       - name: Run ESLint
-        run: npx eslint
+        run: npx eslint ./