e2e: Update Kubernetes to v1.21.1

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

.github/workflows/bootstrap.yaml

@@ -26,6 +26,9 @@ jobs:
           go-version: 1.16.x
       - name: Setup Kubernetes
         uses: engineerd/setup-kind@v0.5.0
+        with:
+          version: v0.11.1
+          image: kindest/node:v1.21.1@sha256:69860bda5563ac81e3c0057d654b5253219618a22ec3a346306239bba8cfa1a6
       - name: Setup Kustomize
         uses: fluxcd/pkg//actions/kustomize@main
       - name: Build

.github/workflows/e2e.yaml

@@ -26,8 +26,8 @@ jobs:
       - name: Setup Kubernetes
         uses: engineerd/setup-kind@v0.5.0
         with:
-          version: "v0.10.0"
-          image: kindest/node:v1.20.2@sha256:8f7ea6e7642c0da54f04a7ee10431549c0257315b3a634f6ef2fecaaedb19bab
+          version: v0.11.1
+          image: kindest/node:v1.21.1@sha256:69860bda5563ac81e3c0057d654b5253219618a22ec3a346306239bba8cfa1a6
           config: .github/kind/config.yaml # disable KIND-net
       - name: Setup Calico for network policy
         run: |