drenv: Update flannel version to v0.27.0

drenv: Update flannel version to v0.27.0

Update flannel CNI plugin version from v0.24.0 to v0.27.0 to align
with upstream Lima changes. This follows the update in lima-vm/lima#2991
which updated the flannel version in the upstream k8s.yaml template.

Resolves #1704

Signed-off-by: raaizik <[email protected]>

Author: raaizik

test/drenv/providers/lima/k8s.yaml

@@ -175,7 +175,7 @@ provision:
       kubectl scale deploy coredns -n kube-system --replicas=1
 
       # Installing a Pod network add-on
-      kubectl apply -f https://github.com/flannel-io/flannel/releases/download/v0.24.0/kube-flannel.yml
+      kubectl apply -f https://github.com/flannel-io/flannel/releases/download/v0.27.0/kube-flannel.yml
 
       # Control plane node isolation
       kubectl taint nodes --all node-role.kubernetes.io/control-plane-