fix: Publish to OpenVSX registry

Signed-off-by: Anatolii Bazko <[email protected]>

Author: tolusha

.github/workflows/release.yaml

@@ -41,6 +41,9 @@ jobs:
         run: |
           vsce package -o vscode-devfile-${{ env.EXT_VERSION }}-${GITHUB_RUN_NUMBER}.vsix
           ls -lash *.vsix
+      - name: Calculate SHA256 Hash
+        run: |
+          sum256hash vscode-devfile-${{ env.EXT_VERSION }}-${GITHUB_RUN_NUMBER}.vsix
       - name: Upload VSIX Artifacts
         uses: actions/[email protected]
         with: