Github Actions Workflows (#1876)

Co-authored-by: Vishal <vishal-biyani@users.noreply.github.com>
Co-authored-by: sahil-lakhwani <sahilakhwani@gmail.com>
Co-authored-by: agiwalpooja20 
Co-authored-by: abhisheks-infracloud

charts/fission-core/requirements.yaml

@@ -1,5 +1,5 @@
 dependencies:
   - name: prometheus
     version: 9.3.1
-    repository: https://kubernetes-charts.storage.googleapis.com
+    repository: https://charts.helm.sh/stable
     condition: prometheus.enabled