Bump GMS dep to latest version from fulghum/tuple_is_null dev branch

Author: fulghum

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/dolthub/dolt/go/gen/proto/dolt/services/eventsapi v0.0.0-20241119094239-f4e529af734d
 	github.com/dolthub/flatbuffers/v23 v23.3.3-dh.2
 	github.com/dolthub/go-icu-regex v0.0.0-20250327004329-6799764f2dad
-	github.com/dolthub/go-mysql-server v0.20.1-0.20250531000817-b7b74d41e84e
+	github.com/dolthub/go-mysql-server v0.20.1-0.20250602190001-b4df373f3ae0
 	github.com/dolthub/sqllogictest/go v0.0.0-20240618184124-ca47f9354216
 	github.com/dolthub/vitess v0.0.0-20250530231040-bfd522856394
 	github.com/fatih/color v1.13.0

go.sum

@@ -268,6 +268,8 @@ github.com/dolthub/go-icu-regex v0.0.0-20250327004329-6799764f2dad h1:66ZPawHszN
 github.com/dolthub/go-icu-regex v0.0.0-20250327004329-6799764f2dad/go.mod h1:ylU4XjUpsMcvl/BKeRRMXSH7e7WBrPXdSLvnRJYrxEA=
 github.com/dolthub/go-mysql-server v0.20.1-0.20250531000817-b7b74d41e84e h1:mZHcAqI2JsoAJbJr8lWsxuIoNpx7NMmbIakioitEHu4=
 github.com/dolthub/go-mysql-server v0.20.1-0.20250531000817-b7b74d41e84e/go.mod h1:nzF9N8zhb7MhYypvwvHfKrN/MaDfuX4K5zXsiK0XvDg=
+github.com/dolthub/go-mysql-server v0.20.1-0.20250602190001-b4df373f3ae0 h1:SN6EK3O3l5cCZswSVJSozQzrHmPshRv9REikB6lA4CE=
+github.com/dolthub/go-mysql-server v0.20.1-0.20250602190001-b4df373f3ae0/go.mod h1:Zn9XK5KLYwPbyMpwfeUP+TgnhlgyID2vXf1WcF0M6Fk=
 github.com/dolthub/gozstd v0.0.0-20240423170813-23a2903bca63 h1:OAsXLAPL4du6tfbBgK0xXHZkOlos63RdKYS3Sgw/dfI=
 github.com/dolthub/gozstd v0.0.0-20240423170813-23a2903bca63/go.mod h1:lV7lUeuDhH5thVGDCKXbatwKy2KW80L4rMT46n+Y2/Q=
 github.com/dolthub/ishell v0.0.0-20240701202509-2b217167d718 h1:lT7hE5k+0nkBdj/1UOSFwjWpNxf+LCApbRHgnCA17XE=