chore(deps): update dependency cilium/cilium to v1.18.3

Signed-off-by: renovate[bot] <[email protected]>

Author: renovate[bot]

.github/workflows/integration-tests.yaml

@@ -22,7 +22,7 @@ env:
   KIND_VERSION: v0.30.0
   KIND_CONFIG: .github/kind-config.yaml
   # renovate: datasource=github-releases depName=cilium/cilium
-  CILIUM_VERSION: v1.18.2
+  CILIUM_VERSION: v1.18.3
   CILIUM_VALUES: .github/cilium-values.yaml
 
 jobs: