Update hatchling requirement version in pyproject.toml

Otherwise it errors over two things: 

* 3.14 classifier
* `license-files = [...]` support

Author: haampie

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["hatchling", "hatch-vcs"]
+requires = ["hatchling>=1.26", "hatch-vcs"]
 build-backend = "hatchling.build"
 
 [tool.hatch.version]