upgrade to require Go 1.23

Signed-off-by: Achille Roussel <[email protected]>

README.md

@@ -1,5 +1,5 @@
 # kway-go [![Go Reference](https://pkg.go.dev/badge/github.com/achille-roussel/kway-go.svg)](https://pkg.go.dev/github.com/achille-roussel/kway-go)
-K-way merge with Go 1.22 range functions
+K-way merge with Go 1.23 range functions
 
 [bboreham]: https://github.com/bboreham
 [godoc]: https://pkg.go.dev/github.com/achille-roussel/[email protected]#pkg-examples
@@ -12,14 +12,6 @@ This package is intended to be used as a library and installed with:
 go get github.com/achille-roussel/kway-go
 ```
 
-:warning: The package depends on Go 1.22 and enabling the rangefunc experiment.
-
-To enable the rangefunc experiment, set the GOEXPERIMENT environment variable in
-the shell that executes the go commands:
-```sh
-export GOEXPERIMENT=rangefunc
-```
-
 ## Usage
 
 The package contains variations of the K-way merge algorithm for different

go.mod

@@ -1,3 +1,3 @@
 module github.com/achille-roussel/kway-go
 
-go 1.22
+go 1.23