audit work, fixed StellaOps.sln warnings/errors, fixed tests, sprints work, new advisories

src/Policy/__Libraries/StellaOps.Policy.Exceptions/Models/ExceptionEvent.cs

@@ -1,4 +1,5 @@
 using System.Collections.Immutable;
+using System.Globalization;
 
 namespace StellaOps.Policy.Exceptions.Models;
 
@@ -255,8 +256,8 @@ public sealed record ExceptionEvent
         NewVersion = newVersion,
         Description = reason ?? $"Exception extended from {previousExpiry:O} to {newExpiry:O}",
         Details = ImmutableDictionary<string, string>.Empty
-            .Add("previous_expiry", previousExpiry.ToString("O"))
-            .Add("new_expiry", newExpiry.ToString("O")),
+            .Add("previous_expiry", previousExpiry.ToString("O", CultureInfo.InvariantCulture))
+            .Add("new_expiry", newExpiry.ToString("O", CultureInfo.InvariantCulture)),
         ClientInfo = clientInfo
     };
 }