java versioning

.github/workflows/package-osx.yaml

@@ -13,6 +13,8 @@ jobs:
         uses: actions/setup-java@v1
         with:
           java-version: 14.0.2
+      - name: Show Java Version
+        run: java -version
       - name: Cache Gradle packages
         uses: actions/cache@v2
         with:

build.gradle

@@ -10,8 +10,6 @@ def sparrowVersion = '0.9.1'
 group "com.sparrowwallet"
 version "${sparrowVersion}"
 
-sourceCompatibility = 1.9
-
 repositories {
     mavenCentral()
     maven { url 'https://oss.sonatype.org/content/groups/public' }