app/matrix: bump element-web to v1.11.8

Change-Id: I667d694f39ff75ec98fb68620037c06b1475ae9e
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1392
Reviewed-by: informatic <informatic@hackerspace.pl>
diff --git a/app/matrix/lib/matrix-ng.libsonnet b/app/matrix/lib/matrix-ng.libsonnet
index 346f158..ac895bc 100644
--- a/app/matrix/lib/matrix-ng.libsonnet
+++ b/app/matrix/lib/matrix-ng.libsonnet
@@ -110,7 +110,7 @@
 
         images: {
             synapse: "matrixdotorg/synapse:v1.56.0",
-            riot: "vectorim/element-web:v1.10.10",
+            riot: "vectorim/element-web:v1.11.8",
             casProxy: "registry.k0.hswaw.net/q3k/oauth2-cas-proxy:0.1.4",
             appserviceIRC: "matrixdotorg/matrix-appservice-irc:release-0.35.1",
             appserviceTelegram: "dock.mau.dev/tulir/mautrix-telegram@sha256:c6e25cb57e1b67027069e8dc2627338df35d156315c004a6f2b34b6aeaa79f77",