Updates go mod version to 1.25.6 (#39)

Co-authored-by: paketo-bot <paketobuildpacks@gmail.com>

Author: sgaist

go.mod

@@ -1,6 +1,6 @@
 module github.com/paketo-buildpacks/python-installers
 
-go 1.25.5
+go 1.25.6
 
 require (
 	github.com/BurntSushi/toml v1.6.0