Pin async-timeout to 4.0.3 and update pip dependencies

Change-Id: Ie2cc2a1f65fd06c8e8ddb7b2f50ee00f9bebeb7c
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/requirements.in b/requirements.in
index 624c559..b580767 100644
--- a/requirements.in
+++ b/requirements.in
@@ -11,6 +11,7 @@
 # under the License.
 
 aiohttp
+async-timeout==4.0.3
 cefevent
 CherryPy>=18.1.2
 deepdiff