Update drone image

Signed-off-by: Mario Danic <mario@lovelyhq.com>

.drone.yml

@@ -1,6 +1,6 @@
 pipeline:
   compile:
-    image: nextcloudci/android:android-35
+    image: nextcloudci/android:android-44
     commands:
       # build app and assemble APK
       - sh -c "if [ '${FLAVOR}' != 'Analysis' ]; then ./gradlew assemble${FLAVOR}; fi"
@@ -9,7 +9,7 @@ pipeline:
         FLAVOR: [Generic, Gplay]
 
   analysis:
-    image: nextcloudci/android:android-37
+    image: nextcloudci/android:android-44
     commands:
       - export BRANCH=$(scripts/analysis/getBranchName.sh $GIT_USERNAME $GIT_TOKEN $DRONE_PULL_REQUEST)
       - scripts/analysis/analysis-wrapper.sh $GIT_USERNAME $GIT_TOKEN $BRANCH $LOG_USERNAME $LOG_PASSWORD $DRONE_BUILD_NUMBER $DRONE_PULL_REQUEST