chore(deps): update dependency cilium/cilium to v1.18.6

Signed-off-by: renovate[bot] <bot@renovateapp.com>

Author: renovate[bot]

.github/workflows/kind.yaml

@@ -17,7 +17,7 @@ env:
   TIMEOUT: 2m
   LOG_TIME: 30m
   # renovate: datasource=github-releases depName=cilium/cilium
-  cilium_version: v1.18.5
+  cilium_version: v1.18.6
 
 jobs:
   installation-and-connectivity: