Merge branch 'renovate/registry1.dso.mil-ironbank-opensource-nginx-nginx-1.x' into 'development'

Update registry1.dso.mil/ironbank/opensource/nginx/nginx Docker tag to v1.21.1

See merge request !29

hardening_manifest.yaml

@@ -14,7 +14,7 @@ tags:
 # Build args passed to Dockerfile ARGs
 args:
   BASE_IMAGE: "opensource/nginx/nginx"
-  BASE_TAG: "1.20.1"
+  BASE_TAG: "1.21.1"
 
 # Docker image labels
 labels: