updated go version to 1.20

Two-Hearts · Two-Hearts · commit be5a2fdfc0cb · 2023-09-06T17:54:25.000+08:00
Signed-off-by: Patrick Zheng &lt;patrickzheng@microsoft.com&gt;
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/notaryproject/notation-go
 
-go 1.19
+go 1.20
 
 require (
 	github.com/go-ldap/ldap/v3 v3.4.5
