chore(go): At this time, stay with 1.24 for development

Even if it works on CI, Go 1.24 is actually easier to manage in
different Linux distributions.

Maybe we will change the requiments:

- if I decide that Fedora 43 (next release) is the "official
distribution to use for development)
- if I decide to ask developpers to use Homebrew to install Go
- others reasons

As I decided, at this time, to use RPM version of golang, the 1.24
version is probably the best choice for the moment.

go.mod

@@ -1,6 +1,8 @@
 module katenary.io
 
-go 1.25
+go 1.24.0
+
+toolchain go1.24.7
 
 require (
 	github.com/compose-spec/compose-go v1.20.2