Fixed saving the spigot API instead of the actual server file

scripts/install-spigot.sh

@@ -14,10 +14,9 @@ for ver in "${versions[@]}"; do
 
   mvn -q org.apache.maven.plugins:maven-dependency-plugin:3.9.0:get -Dartifact=org.spigotmc:spigot:${ver}-R0.1-SNAPSHOT
 
-  if [ "$?" -eq 0 ]; then
+  ARTIFACT="spigot-${ver}.jar"
+  if [ "$?" -eq 0 ] && [ -e "/build/$ARTIFACT" ]; then
     echo "Located spigot $ver successfully"
-
-    mvn -q org.apache.maven.plugins:maven-dependency-plugin:3.9.0:copy -Dartifact=org.spigotmc:spigot:${ver}-R0.1-SNAPSHOT -DoutputDirectory=/build
   else
     echo "Spigot $ver not located, building..."
     if [ ! -d "${HOME}/buildtools" ]; then
@@ -29,8 +28,6 @@ for ver in "${versions[@]}"; do
 
     java -jar BuildTools.jar --rev "$ver"
 
-    ARTIFACT="spigot-${ver}-R0.1-SNAPSHOT.jar"
-    mv "spigot-${ver}.jar" "$ARTIFACT"
     mv "$ARTIFACT" /build
   fi
 done