updating maintainer in hm and and renovate files

hardening_manifest.yaml

@@ -27,9 +27,9 @@ resources:
       type: sha256
       value: cfbbb9ba72c9402ef4ab9d8f843439693dfb380927921740e51706d90869c7e1
 maintainers:
-  - name: "Colton Freeman"
+  - name: "James Casteel"
     email: "ironbank@dsop.io"
-    username: "colton.freeman"
+    username: "jcasteel"
     cht_member: true
   - name: "Blane Staskiewicz"
     email: "ironbank@dsop.io"

renovate.json

 {
     "assignees": [
       "@staskiewicz.blane",
-      "@colton.freeman"
+      "@jcasteel"
     ],
     "baseBranches": [
       "development"