fix: PackageManifest version

Author: jcdcdev

src/jcdcdev.Umbraco.ExtendedMarkdownEditor/Composing/PackageManifestReader.cs

@@ -1,4 +1,5 @@
-using jcdcdev.Umbraco.Core.Extensions;
+using System.Reflection;
+using jcdcdev.Umbraco.Core.Extensions;
 using jcdcdev.Umbraco.Core.Web.Models.Manifests;
 using Umbraco.Cms.Core.Manifest;
 using Umbraco.Cms.Infrastructure.Manifest;
@@ -13,7 +14,7 @@ public Task<IEnumerable<PackageManifest>> ReadPackageManifestsAsync()
         var packageManifest = new PackageManifest
         {
             Name = Constants.PackageName,
-            Version = EnvironmentExtensions.CurrentAssemblyVersion().ToSemVer()?.ToString() ?? "0.1.0",
+            Version = Assembly.GetAssembly(typeof(PackageManifestReader))?.GetName().Version?.ToSemVer()?.ToString() ?? "0.1.0",
             AllowPublicAccess = false,
             AllowTelemetry = true,
             Extensions = []