fix: use repo owner instead of actor as username

This averts issues that occur in the hyperledger org to publish values
to ghcr.io

Signed-off-by: Daniel Bluhm <dbluhm@pm.me>

Author: dbluhm

.github/workflows/publish-indy.yml

@@ -52,7 +52,7 @@ jobs:
         uses: docker/login-action@v1
         with:
           registry: ghcr.io
-          username: ${{ github.actor }}
+          username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Setup Image Metadata (manual)

.github/workflows/publish.yml

@@ -45,7 +45,7 @@ jobs:
         uses: docker/login-action@v1
         with:
           registry: ghcr.io
-          username: ${{ github.actor }}
+          username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Setup Image Metadata (manual)