[VOL-5491] upgrade go to 1.25.3 and golangci-lint version to 2.5.0

Signed-off-by: mgouda <madhumati.gouda@radisys.com>
Change-Id: I741fcf658ffdd127b897e5fa8cc57da6c9926e7e
diff --git a/go.mod b/go.mod
index 0e57ce1..87f31e0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/opencord/voltha-openolt-adapter
 
-go 1.24.5
+go 1.25.3
 
 replace (
 	github.com/coreos/bbolt v1.3.4 => go.etcd.io/bbolt v1.3.4