Merge pull request #456 from alex-shen1/alexzero/release-v1.8.1

Update chart version to v1.8.1

Author: cert-manager-prow[bot]

charts/aws-pca-issuer/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: aws-privateca-issuer
 description: An addon for cert-manager to sign certificates using AWS PCA
 type: application
-version: v1.8.0
-appVersion: v1.8.0
+version: v1.8.1
+appVersion: v1.8.1