flutter version bump (#504)

diff --git a/Dockerfile b/Dockerfile
index 496439a..92901a4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@
 # To retrieve this value, please run the following in your closest shell:
 #
 # $ (cd flutter && git rev-parse HEAD)
-ARG FLUTTER_COMMIT=66eb92e6259687c6e3434e9c76842b0848775c6b
+ARG FLUTTER_COMMIT=14f3a36abaace74aeba3e40001ce905336fef415
 
 # We install unzip and remove the apt-index again to keep the
 # docker image diff small.
diff --git a/flutter b/flutter
index 66eb92e..14f3a36 160000
--- a/flutter
+++ b/flutter
@@ -1 +1 @@
-Subproject commit 66eb92e6259687c6e3434e9c76842b0848775c6b
+Subproject commit 14f3a36abaace74aeba3e40001ce905336fef415