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

src/__Libraries/StellaOps.Replay.Core/Manifest/ReplayManifestWriter.cs

@@ -1,3 +1,4 @@
+using System.Globalization;
 using System.Linq;
 using StellaOps.Replay.Core.Models;
 using YamlDotNet.Serialization;
@@ -21,7 +22,7 @@ public sealed class ReplayManifestWriter
             snapshot = new
             {
                 id = snapshot.SnapshotId,
-                createdAt = snapshot.CreatedAt.ToString("O"),
+                createdAt = snapshot.CreatedAt.ToString("O", CultureInfo.InvariantCulture),
                 artifact = snapshot.ArtifactDigest,
                 previousId = snapshot.PreviousSnapshotId
             },
@@ -68,7 +69,7 @@ public sealed class ReplayManifestWriter
                     name = f.Name,
                     version = f.Version,
                     digest = f.Digest,
-                    fetchedAt = f.FetchedAt.ToString("O")
+                    fetchedAt = f.FetchedAt.ToString("O", CultureInfo.InvariantCulture)
                 }),
                 lattice = new
                 {