Fixed service account patch string format

[lili-wan]

Signed-off-by: lwan3 [email protected]

Related to issue #107, the patch string was not in correct format so it failed silently.

Could you share the solution in high level?

Could you share the test results?
Before patching the annotation

k get sa default -o yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  creationTimestamp: "2023-01-13T05:34:49Z"
  name: default
  namespace: dev-iksmanager-usw2-ldev
  resourceVersion: "1590303619"
  uid: 1889a858-f860-4565-b600-7cacc984fa1a
secrets:
- name: default-token-slnmb

After patching the annoation

k get sa default -o yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  annotations:
    eks.amazonaws.com/role-arn: arn:aws:iam::000065563193:role/k8s-dev-iksmanager-usw2-ldev
    eks.amazonaws.com/sts-regional-endpoints: "true"
  creationTimestamp: "2023-01-13T05:34:49Z"
  name: default
  namespace: dev-iksmanager-usw2-ldev
  resourceVersion: "1641569213"
  uid: 1889a858-f860-4565-b600-7cacc984fa1a
secrets:
- name: default-token-slnmb

[figo]

LGTM