use deploy key (#32)

Signed-off-by: Alex Meijer <[email protected]>

.github/workflows/update-manifest.yaml

@@ -14,6 +14,8 @@ jobs:
         - uses: actions/checkout@v4
           with:
             path: ./
+            ssh-key: ${{ secrets.GH_SSH_KEY}}
+            persist-credentials: true
         - name: update current plugin list
           run: | 
                plugins=$(ls pkg/plugins | tr -s ' ' | sort)
@@ -36,15 +38,15 @@ jobs:
         #     github_token: 
         - name: Commit changes
           run: |
-              git config --local user.email "ccolvin@kubecost.com"
-              git config --local user.name "cliffcolvin"
+              git config --local user.email "github-actions[bot]@noreply.example.com"
+              git config --local user.name "github-actions[bot]"
               git add manifest
               git commit -m "update manifest"
     
         - name: Push chart to repo
           uses: ad-m/github-push-action@master
           with:
-              github_token: ${{ secrets.GH_PAT }}
+              ssh: true
               directory: .
               repository: opencost/opencost-plugins
               branch: main