chore(deps): update helm release tailscale-operator to v1.90.8 (#1612)

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

Author: renovate[bot]

kustomize/bases/tailscale/kustomization.yaml

@@ -5,7 +5,7 @@ namespace: tailscale
 helmCharts:
   - name: tailscale-operator
     repo: https://pkgs.tailscale.com/helmcharts
-    version: 1.90.6
+    version: 1.90.8
     releaseName: tailscale-operator
     namespace: tailscale
     valuesFile: tailscale.values.yaml