Update build.yml

Author: BFergerson

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
         VERSION="$(echo "$PROPERTIES" | grep "^version:" | cut -f2- -d ' ')"
         echo "::set-output name=version::$VERSION"
         echo "SPP_PROTOCOL_VERSION=$VERSION" >> $GITHUB_ENV
-        echo "SPP_RELEASE_VERSION=$(echo ${SPP_PROTOCOL_VERSION/-SNAPSHOT/})" >> $GITHUB_ENV
+        echo "SPP_RELEASE_VERSION=${VERSION/-SNAPSHOT/}" >> $GITHUB_ENV
 
     - name: Build with Gradle
       run: ./gradlew build