Change second source instruction

Author: Flowsqy

jitpack.yml

@@ -4,8 +4,8 @@ before_install:
   - curl -s "https://get.sdkman.io" | bash
   - source ~/.sdkman/bin/sdkman-init.sh
   - sdk install java 16.0.1-open
-  - source ~/.sdkman/bin/sdkman-init.sh
 
 install:
+  - source ~/.sdkman/bin/sdkman-init.sh
   - java -version
   - mvn clean install -DskipTests