Update compatibility version for pycolmap

Author: KlrShaK

README.md

@@ -28,7 +28,7 @@ docker build -t pyceres -f Dockerfile .
 ### Compatibility with pycolmap
 pyceres Version | Corresponding pycolmap Version(s)
 -- | --
-2.6 | 3.13.0, 3.12.6
+2.6 | >= 3.12.6
 2.5 | 3.12.0 - 3.12.5
 2.4 | 3.11.0
 2.3 | 3.10.0