Update to 1.15.15

hardening_manifest.yaml

@@ -8,7 +8,7 @@ name: "google/golang/golang-1.15"
 # The most specific version should be the first tag and will be shown
 # on ironbank.dsop.io
 tags:
-- "1.15.14"
+- "1.15.15"
 - "latest"
 
 # Build args passed to Dockerfile ARGs
@@ -27,7 +27,7 @@ labels:
   org.opencontainers.image.url: "https://hub.docker.com/_/golang"
   ## Name of the distributing entity, organization or individual
   org.opencontainers.image.vendor: "Google"
-  org.opencontainers.image.version: "1.15.14"
+  org.opencontainers.image.version: "1.15.15"
   ## Keywords to help with search (ex. "cicd,gitops,golang")
   mil.dso.ironbank.image.keywords: "golang,go"
   ## This value can be "opensource" or "commercial"
@@ -38,10 +38,10 @@ labels:
 # List of resources to make available to the offline build context
 resources:
 - filename: golang.tar.gz
-  url: https://golang.org/dl/go1.15.14.linux-amd64.tar.gz
+  url: https://golang.org/dl/go1.15.15.linux-amd64.tar.gz
   validation:
     type: sha256
-    value: 6f5410c113b803f437d7a1ee6f8f124100e536cc7361920f7e640fedf7add72d
+    value: 0885cf046a9f099e260d98d9ec5d19ea9328f34c8dc4956e1d3cd87daaddb345
 
 # List of project maintainers
 maintainers: