Update Go module dependencies and version

- Upgrade Go version from 1.23.4 to 1.24.3
- Replace zerolog dependency with local xerrors and logging modules
- Add local module replacements for git.antanst.com/antanst/xerrors and logging
- Remove unused color and system dependencies
- Keep gabriel-vasile/mimetype and matoous/go-nanoid dependencies

go.mod

@@ -1,16 +1,16 @@
 module gemserve
 
-go 1.23.4
+go 1.24.3
 
 require (
+	git.antanst.com/antanst/logging v0.0.0
+	git.antanst.com/antanst/xerrors v0.0.0
 	github.com/gabriel-vasile/mimetype v1.4.8
 	github.com/matoous/go-nanoid/v2 v2.1.0
-	github.com/rs/zerolog v1.33.0
 )
 
-require (
-	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.19 // indirect
-	golang.org/x/net v0.33.0 // indirect
-	golang.org/x/sys v0.29.0 // indirect
-)
+replace git.antanst.com/antanst/xerrors => ../xerrors
+
+replace git.antanst.com/antanst/logging => ../logging
+
+require golang.org/x/net v0.33.0 // indirect