chore(ci): fix version enforcing job

Author: jxs

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
 
       - name: Extract version from manifest
         run: |
-          CRATE_VERSION=$(cargo metadata --format-version=1 --no-deps | jq -e -r '.packages[] | select(.name == "'"$CRATE"'") | .version')
+          CRATE_VERSION="$(cargo metadata --format-version=1 --no-deps | jq -e -r '.packages[] | select(.name == "'"$CRATE"'") | .version')"
 
           echo "CRATE_VERSION=$CRATE_VERSION" >> $GITHUB_ENV