Matrix: Upgrade to v1.126.0

Change-Id: Id5d8d9ee3cb308f18898d44ac8327c4b4659c25b
diff --git a/core/installer/values-tmpl/matrix.cue b/core/installer/values-tmpl/matrix.cue
index c34cc11..953c6b7 100644
--- a/core/installer/values-tmpl/matrix.cue
+++ b/core/installer/values-tmpl/matrix.cue
@@ -34,7 +34,7 @@
 		matrix: {
 			repository: "matrixdotorg"
 			name: "synapse"
-			tag: "v1.117.0"
+			tag: "v1.126.0"
 			pullPolicy: "IfNotPresent"
 		}
 		postgres: {