ci: fix build failure by allowing empty signing secrets

Author: ilhan-mstf

.github/workflows/release.yml

@@ -72,13 +72,13 @@ jobs:
         uses: tauri-apps/tauri-action@v0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          # Apple Signing & Notarization Secrets
-          APPLE_CERTIFICATE: ${{ secrets.APPLE_CERTIFICATE }}
-          APPLE_CERTIFICATE_PASSWORD: ${{ secrets.APPLE_CERTIFICATE_PASSWORD }}
-          APPLE_SIGNING_IDENTITY: ${{ secrets.APPLE_SIGNING_IDENTITY }}
-          APPLE_ID: ${{ secrets.APPLE_ID }}
-          APPLE_PASSWORD: ${{ secrets.APPLE_PASSWORD }}
-          APPLE_TEAM_ID: ${{ secrets.APPLE_TEAM_ID }}
+          # Only provide these if they are actually set in GitHub Secrets
+          APPLE_CERTIFICATE: ${{ secrets.APPLE_CERTIFICATE || '' }}
+          APPLE_CERTIFICATE_PASSWORD: ${{ secrets.APPLE_CERTIFICATE_PASSWORD || '' }}
+          APPLE_SIGNING_IDENTITY: ${{ secrets.APPLE_SIGNING_IDENTITY || '' }}
+          APPLE_ID: ${{ secrets.APPLE_ID || '' }}
+          APPLE_PASSWORD: ${{ secrets.APPLE_PASSWORD || '' }}
+          APPLE_TEAM_ID: ${{ secrets.APPLE_TEAM_ID || '' }}
         with:
           projectPath: ./omnitool
           tagName: ${{ github.ref_name }}