chore(deps): update dependency go to v1.26.0 (main) (cloudnative-pg#9982)

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/cloudnative-pg/cloudnative-pg
 
 go 1.25.0
 
-toolchain go1.25.7
+toolchain go1.26.0
 
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.2