ci: use real secret name

Author: sgratzl

.github/workflows/create_release.yml

@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           ref: main
-          ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}
+          ssh-key: ${{ secrets.CMU_DELPHI_DEPLOY_MACHINE_SSH }}
       - name: Reset main branch
         run: |
           git fetch origin dev:dev

.github/workflows/release_main.yml

@@ -71,7 +71,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           ref: dev
-          ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}
+          ssh-key: ${{ secrets.CMU_DELPHI_DEPLOY_MACHINE_SSH }}
       - name: Reset dev branch
         run: |
           git fetch origin main:main