bump containerd/continuity f2a389ac0a02ce21c09edd7344677a601970f41c

full diff: https://github.com/containerd/continuity/compare/aaeac12a7ffcd198ae25440a9dff125c2e2703a7...f2a389ac0a02ce21c09edd7344677a601970f41c

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor.conf

@@ -119,7 +119,7 @@ google.golang.org/genproto                          694d95ba50e67b2e363f3483057d
 # containerd
 github.com/containerd/containerd                    36cf5b690dcc00ff0f34ff7799209050c3d0c59a # v1.3.0
 github.com/containerd/fifo                          a9fb20d87448d386e6d50b1f2e1fa70dcf0de43c
-github.com/containerd/continuity                    aaeac12a7ffcd198ae25440a9dff125c2e2703a7
+github.com/containerd/continuity                    f2a389ac0a02ce21c09edd7344677a601970f41c
 github.com/containerd/cgroups                       c4b9ac5c7601384c965b9646fc515884e091ebb9
 github.com/containerd/console                       0650fd9eeb50bab4fc99dceb9f2e14cf58f36e7f
 github.com/containerd/go-runc                       e029b79d8cda8374981c64eba71f28ec38e5526f