Add a lower-bounds about base64 on h1.1.1.0

Author: dinosaure

packages/h1/h1.1.1.0/opam

@@ -15,7 +15,7 @@ depends: [
   "dune" {>= "2.0.0"}
   "alcotest" {with-test & >= "1.2.0"}
   "stdio" {with-test}
-  "base64"
+  "base64" {>= "3.5.0"}
   "bstr"
   "angstrom" {>= "0.14.0"}
   "faraday"  {>= "0.6.1"}