ci: use npm install for coverage-action

Author: NGPixel

.github/workflows/build.yml

@@ -207,6 +207,11 @@ jobs:
         token: ${{ github.token }}
         tag: ${{ env.PKG_VERSION }}
         writeToFile: false
+
+    - name: Prepare Coverage Action
+      if: ${{ github.event.inputs.skiptests == 'false' }}
+      working-directory: ./dev/coverage-action
+      run: npm install
 
     - name: Process Coverage Stats + Chart
       id: covprocess

dev/coverage-action/action.yml

@@ -36,7 +36,7 @@ outputs:
     description: Changelog with headers prepended and coverage stats + chart appended
 runs:
   using: 'node16'
-  main: 'dist/index.js'
+  main: 'index.js'
 branding:
   icon: layers
   color: red