fix(deps): update module github.com/gogf/gf/v2 to v2.5.6 (#6857)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go/goframe/go.mod

@@ -1,3 +1,3 @@
 module main
 
-require github.com/gogf/gf/v2 v2.5.5
+require github.com/gogf/gf/v2 v2.5.6