Update to SDK 29 (#3629)

* Print out repo JSON contents during build

* Target SDK 29

.travis/create-repo.sh

@@ -18,7 +18,7 @@ for APK in ${APKS[@]}; do
     BADGING="$(${TOOLS}/aapt dump badging $APK)"
 
     PACKAGE=$(echo "$BADGING" | grep package:)
-    PKGNAME=$(echo $PACKAGE | grep -Po "name='\K[^']+")
+    PKGNAME=$(echo $PACKAGE | grep -Po "package: name='\K[^']+")
     VCODE=$(echo $PACKAGE | grep -Po "versionCode='\K[^']+")
     VNAME=$(echo $PACKAGE | grep -Po "versionName='\K[^']+")
 
@@ -40,3 +40,5 @@ for APK in ${APKS[@]}; do
         '{name:$name, pkg:$pkg, apk:$apk, lang:$lang, code:$code, version:$version}'
 
 done | jq -scr '[.[]]' > index.json
+
+cat index.json