upper bound conduit-mirage

Error:
```
File "src/conduit-mirage/resolver_mirage.ml", line 96, characters 13-51:
96 |   module H = Happy_eyeballs_mirage.Make (T) (C) (S)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error: The functor application is ill-typed.
       These arguments:
         T C S
       do not match these parameters:
         functor (S : Tcpip.Stack.V4V6) -> ...
       1. The following extra argument is provided
              T : sig val sleep_ns : int64 -> unit Lwt.t end
       2. The following extra argument is provided
              C :
              sig
                val elapsed_ns : unit -> int64
                val period_ns : unit -> int64 option
              end
       3. Module S matches the expected module type Tcpip.Stack.V4V6
```

Author: hannesm

packages/conduit-mirage/conduit-mirage.6.2.3/opam

@@ -28,6 +28,7 @@ depends: [
   "ipaddr-sexp"
   "tcpip" {>= "7.0.0"}
   "fmt" {>= "0.8.7"}
+  "happy-eyeballs-mirage" {< "2.0.0"}
 ]
 conflicts: [
   "mirage-conduit"

packages/conduit-mirage/conduit-mirage.7.0.0/opam

@@ -28,6 +28,7 @@ depends: [
   "ipaddr-sexp"
   "tcpip" {>= "7.0.0"}
   "fmt" {>= "0.8.7"}
+  "happy-eyeballs-mirage" {< "2.0.0"}
 ]
 conflicts: [
   "mirage-conduit"

packages/conduit-mirage/conduit-mirage.7.1.0/opam

@@ -28,6 +28,7 @@ depends: [
   "ipaddr-sexp"
   "tcpip" {>= "7.0.0"}
   "fmt" {>= "0.8.7"}
+  "happy-eyeballs-mirage" {< "2.0.0"}
 ]
 conflicts: [
   "mirage-conduit"