Chore(CI): ignore non-code related changes (#172)

This will skip changes in markdown and other files not related to code.

Author: MichelDiz

.github/workflows/ci-dgraph-js.yml

@@ -1,6 +1,13 @@
 name: ci-dgraph-js-tests
 on:
   push:
+    paths-ignore:
+      - '**/**.dockerignore'
+      - '**/**.gitignore'
+      - '**/**.md'
+      - '**/**.png'
+      - '**/**.gif'
+      - '**/**.ini'
     branches: 
     - master
   pull_request: