Update crust in CI to point to master (#634)

# Description
This PR fixed CI, so the crust now pulls the master not the v0.47 migration branch
# Reviewers checklist:
- [ ] Try to write more meaningful comments with clear actions to be taken.
- [ ] Nit-picking should be unblocking. Focus on core issues.

# Authors checklist
- [x] Provide a concise and meaningful description
- [x] Review the code yourself first, before making the PR.
- [x] Annotate your PR in places that require explanation.
- [x] Think and try to split the PR to smaller PR if it is big.

.github/workflows/ci.yml

@@ -77,7 +77,6 @@ jobs:
         with:
           repository: CoreumFoundation/crust
           path: crust
-          ref: v0.47-migration-v2
       - name: Set up crust
         run: echo "$(pwd)/crust/bin" >> $GITHUB_PATH
       - name: Setup go cache