Remove release-version-bumps

Author: iunanua

.github/workflows/release-proposal-dispatch.yml

@@ -241,10 +241,7 @@ jobs:
               fi
             fi
           done
-          
-      - name: Release version bumps
-        id: release-version-bumps
-        run: |
+
           echo "Release version bumps..."
 
           # After creating and pushing the proposal branch, tag/merge-base resolution can fail
@@ -264,8 +261,6 @@ jobs:
           ORIGINAL_HEAD=$(cat /tmp/release_head_sha)
           echo "ORIGINAL_HEAD: $ORIGINAL_HEAD"
 
-          BRANCH_NAME="${{ steps.proposal-branch.outputs.branch_name }}"
-
           # iterate over the commits and execute cargo release for each crate
           jq -c '.[]' /tmp/commits-by-crate.json | while read -r crate; do
             NAME=$(echo "$crate" | jq -r '.name')