jsonrpc is not compatible with yojson < 3.0.0

Due to the removal of the Tuple and Variant variants.
See also ocaml/ocaml-lsp#1534.

Signed-off-by: Marcello Seri <marcello.seri@gmail.com>

Author: mseri

packages/jsonrpc/jsonrpc.1.4.1/opam

@@ -16,7 +16,7 @@ homepage: "https://github.com/ocaml/ocaml-lsp"
 bug-reports: "https://github.com/ocaml/ocaml-lsp/issues"
 depends: [
   "dune" {>= "2.5"}
-  "yojson"
+  "yojson" {< "3.0.0"}
   "stdlib-shims"
   "ocaml-syntax-shims"
   "ppx_yojson_conv_lib"

packages/jsonrpc/jsonrpc.1.5.0/opam

@@ -16,7 +16,7 @@ homepage: "https://github.com/ocaml/ocaml-lsp"
 bug-reports: "https://github.com/ocaml/ocaml-lsp/issues"
 depends: [
   "dune" {>= "2.5"}
-  "yojson"
+  "yojson" {< "3.0.0"}
   "stdlib-shims"
   "ocaml-syntax-shims"
   "ppx_yojson_conv_lib"