ci: update Go version support to 1.25+ across CI and docs (#4550)

* ci: update Go version support to 1.25+ across CI and docs

- Remove Go 1.24 from CI test matrix to only support 1.25 and 1.26
- Update documentation to require Go version 1.25 or above

Signed-off-by: appleboy <appleboy.tw@gmail.com>

* chore: increase required Go version for Gin to 1.25

- Update minimum required Go version for Gin from 1.24 to 1.25
- Revise related warning message and test expectations to match new version requirement

Signed-off-by: appleboy <appleboy.tw@gmail.com>

---------

Signed-off-by: appleboy <appleboy.tw@gmail.com>

Author: appleboy

.github/workflows/gin.yml

@@ -33,7 +33,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        go: ["1.24", "1.25", "1.26"]
+        go: ["1.25", "1.26"]
         test-tags:
           [
             "",

README.md

@@ -44,7 +44,7 @@ Gin combines the simplicity of Express.js-style routing with Go's performance ch
 
 ### Prerequisites
 
-- **Go version**: Gin requires [Go](https://go.dev/) version [1.24](https://go.dev/doc/devel/release#go1.24.0) or above
+- **Go version**: Gin requires [Go](https://go.dev/) version [1.25](https://go.dev/doc/devel/release#go1.25.0) or above
 - **Basic Go knowledge**: Familiarity with Go syntax and package management is helpful
 
 ### Installation

debug.go

@@ -13,7 +13,7 @@ import (
 	"sync/atomic"
 )
 
-const ginSupportMinGoVer = 24
+const ginSupportMinGoVer = 25
 
 var runtimeVersion = runtime.Version()
 
@@ -80,7 +80,7 @@ func getMinVer(v string) (uint64, error) {
 
 func debugPrintWARNINGDefault() {
 	if v, e := getMinVer(runtimeVersion); e == nil && v < ginSupportMinGoVer {
-		debugPrint(`[WARNING] Now Gin requires Go 1.24+.
+		debugPrint(`[WARNING] Now Gin requires Go 1.25+.
 
 `)
 	}

debug_test.go

@@ -121,7 +121,7 @@ func TestDebugPrintWARNINGDefaultWithUnsupportedVersion(t *testing.T) {
 		debugPrintWARNINGDefault()
 		SetMode(TestMode)
 	})
-	assert.Equal(t, "[GIN-debug] [WARNING] Now Gin requires Go 1.24+.\n\n[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", re)
+	assert.Equal(t, "[GIN-debug] [WARNING] Now Gin requires Go 1.25+.\n\n[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", re)
 }
 
 func TestDebugPrintWARNINGNew(t *testing.T) {