Syphon: fix 0.1.4 (140)

metadata/org.tether.tether.yml

@@ -78,7 +78,7 @@ Builds:
     submodules: true
     output: build/app/outputs/apk/release/app-release.apk
     srclibs:
-      - flutter@1.20.2
+      - flutter@1.22.2
     prebuild:
       - echo 'android.applicationVariants.all { variant -> variant.outputs.all { output
         -> outputFileName = "app-${output.baseName}.apk" } }' >> android/app/build.gradle