Add (long overdue) blog post about the 0.53 release

Author: patriksvensson

docs/input/blog/posts/2025-10-26-spectre-console-0.53-released.md

@@ -0,0 +1,15 @@
+Title: Spectre.Console 0.53.0 released!
+Description: Someone said CancellationToken?
+Published: 2025-10-26
+Category: Release Notes
+Excluded: false
+---
+
+Version `0.53.0` of Spectre.Console has been released!
+
+## What's Changed
+
+* Add top-level CancellationToken support to Spectre.Console.Cli by [@0xced](https://github.com/0xced) in [#1911](https://github.com/spectreconsole/spectre.console/pull/1911)
+* Update the Spectre.Console.Cli documentation with CancellationToken by [@0xced](https://github.com/0xced) in [#1920](https://github.com/spectreconsole/spectre.console/pull/1920)
+
+**Full Changelog**: https://github.com/spectreconsole/spectre.console/compare/0.52.0...0.53.0