build: 调整依赖版本以兼容 Go 1.23

- go.mod: go 1.26.2 → go 1.23
- gin-gonic/gin: v1.12.0 → v1.10.0
- gin-contrib/sessions: v1.1.0 → v1.0.1

新版 Gin/gin-contrib 都要求 Go 1.25+，但生产服务器
go 1.23.4 升不上来（连不上 proxy.golang.org），先降到
兼容版本保证能编过。

go.mod

@@ -1,7 +1,7 @@
 module github.com/QuantumNous/new-api
 
 // +heroku goVersion go1.18
-go 1.26.2
+go 1.23
 
 require (
 	github.com/Calcium-Ion/go-epay v0.0.4
@@ -16,9 +16,9 @@ require (
 	github.com/fyinfor/router-engine v0.1.0
 	github.com/gin-contrib/cors v1.7.7
 	github.com/gin-contrib/gzip v1.2.6
-	github.com/gin-contrib/sessions v1.1.0
+	github.com/gin-contrib/sessions v1.0.1
 	github.com/gin-contrib/static v1.1.6
-	github.com/gin-gonic/gin v1.12.0
+	github.com/gin-gonic/gin v1.10.0
 	github.com/glebarez/sqlite v1.11.0
 	github.com/go-audio/aiff v1.1.0
 	github.com/go-audio/wav v1.1.0