pin build-extension-charts to use workflow from @rancher/shell 2.0.2 (#94)

Author: mantis-toboggan-md

.github/workflows/build-extension-charts.yml

@@ -12,7 +12,7 @@ defaults:
 
 jobs:
   build-extension-charts:
-    uses: rancher/dashboard/.github/workflows/build-extension-charts.yml@master
+    uses: rancher/dashboard/.github/workflows/build-extension-charts.yml@shell-pkg-v2.0.2
     permissions:
       actions: write
       contents: write