fix(build): force protobuf version to prevent Java-7 issue (PR #1255)

Signed-off-by: NMuntashir Al-Islam <muntashirakon@riseup.net>

jadx-core/build.gradle

@@ -7,6 +7,10 @@ dependencies {
 
 	implementation 'com.google.code.gson:gson:2.8.8'
 	implementation 'com.android.tools.build:aapt2-proto:4.2.1-7147631'
+	constraints {
+		// Force protobuf version to prevent Java-7 issue
+		implementation 'com.google.protobuf:protobuf-java:3.11.4'
+	}
 
 	testImplementation 'org.apache.commons:commons-lang3:3.12.0'