ci: fix path to index.js

Author: MathiasVDA

.github/workflows/build.yml

@@ -31,7 +31,7 @@ jobs:
 
       - name: Build unminified bundle with esbuild
         run: |
-          npx esbuild index.js \
+          npx esbuild src/index.js \
             --bundle \
             --format=iife \
             --global-name=YasguiGraphPlugin \