chore(deps): update syncthing/syncthing docker tag to v1.29.4 (#2256)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

kubernetes/storage/syncthing/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: "syncthing/syncthing"
-  tag: "1.29.3@sha256:59580c71260ea38d50247a0acebd6c608c6d59b78e651b0194943a8649841f82"
+  tag: "1.29.4@sha256:648640e6db80ef0a1420d9e0835ecbf802b1950750b672086c600fd5462ebe7e"
 
 ports:
 - name: main