Fix go version

trdthg · trdthg · commit 57a1b77c1638 · 2025-04-28T14:07:35.000+08:00
go cmd will download and cache a copy of the Go toolchain, but go1.24 is not a valid version since golang/go#57631
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module code.gitea.io/gitea
 
-go 1.24
+go 1.24.0
 
 // rfc5280 said: "The serial number is an integer assigned by the CA to each certificate."
 // But some CAs use negative serial number, just relax the check. related:
