fix(ci): pin Srtool version to 1.77.0 for compatibility (#1015)

The latest Srtool version (1.81.0) uses rustc 1.81.0, which causes issues with our current setup. TFChain and polkadot-sdk 1.10 are tested with rustc 1.70.0. This commit pins Srtool to version 1.77.0 to avoid compatibility issues until we can update to the latest polkadot-sdk.

.github/workflows/030_create_release.yaml

@@ -28,6 +28,7 @@ jobs:
           workdir: '${{ github.workspace }}/substrate-node'
           package: tfchain-runtime
           runtime_dir: runtime
+          tag: "1.77.0"
 
       - name: Summary
         run: |