chore(deps): update dependency go to v1.25.3

Signed-off-by: red-hat-konflux <126015336+red-hat-konflux[bot]@users.noreply.github.com>

Author: red-hat-konflux[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/observatorium/api
 
 go 1.23.8
 
-toolchain go1.23.9
+toolchain go1.25.3
 
 require (
 	github.com/brancz/kube-rbac-proxy v0.19.0