Bump minimum OCaml version from 4.14.2 to 5.0.1

- Update CI compatibility test to use OCaml 5.0.1
- Update all package dependencies in dune-project to require OCaml >= 5.0.1
- Update rescript.opam.template to require OCaml >= 5.0.1
- Remove redundant OCaml version check from syntax_benchmarks/dune

Author: cristianoc

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
 
           # Verify that the compiler still builds with the oldest OCaml version we support.
           - os: ubuntu-24.04
-            ocaml_compiler: ocaml-variants.4.14.2+options,ocaml-option-static
+            ocaml_compiler: ocaml-variants.5.0.1+options,ocaml-option-static
             node-target: linux-x64
             rust-target: x86_64-unknown-linux-musl
 

dune-project

@@ -16,14 +16,17 @@
 
 (package
  (name rescript)
- (synopsis "ReScript compiler"))
+ (synopsis "ReScript compiler")
+ (depends
+  (ocaml
+   (>= 5.0.1))))
 
 (package
  (name analysis)
  (synopsis "ReScript Analysis")
  (depends
   (ocaml
-   (>= 4.14))
+   (>= 5.0.1))
   (cppo
    (= 1.8.0))
   dune))
@@ -33,7 +36,7 @@
  (synopsis "ReScript Tools")
  (depends
   (ocaml
-   (>= 4.14))
+   (>= 5.0.1))
   (cmarkit
    (>= 0.3.0))
   (cppo

rescript.opam.template

@@ -1,5 +1,5 @@
 depends: [
-  "ocaml" {>= "4.14"}
+  "ocaml" {>= "5.0.1"}
   "cppo" {= "1.8.0"}
   "dune" {>= "3.17"}
   "flow_parser" {= "0.267.0"}

tests/syntax_benchmarks/dune

@@ -10,7 +10,6 @@
  (enabled_if
   (and
    (<> %{profile} browser)
-   (>= %{ocaml_version} "4.14.0")
    (or
     (= %{system} macosx)
     ; or one of Linuxes (see https://github.com/ocaml/ocaml/issues/10613)