OCaml 5.2.0 + setup-ocaml 3 (#1030)

Author: cknitt

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Build
-        uses: docker://ghcr.io/rescript-lang/rescript-ci-build:alpine-3.19-ocaml-5.1.1-01
+        uses: docker://ghcr.io/rescript-lang/rescript-ci-build:alpine-3.20-ocaml-5.2.0-01
         with:
           args: opam exec -- dune build --profile static
 
@@ -96,27 +96,13 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ~/.opam
-        key: ${{matrix.os}}-rescript-vscode-v4
+        key: ${{matrix.os}}-rescript-vscode-v5
 
     - name: Use OCaml
-      uses: ocaml/setup-ocaml@v2
-      if: matrix.os != 'windows-latest'
-      with:
-        ocaml-compiler: 5.1.1
-        opam-pin: false
-        opam-depext: false
-
-    - name: Use OCaml (Windows)
-      uses: ocaml/setup-ocaml@v2
-      if: matrix.os == 'windows-latest'
+      uses: ocaml/setup-ocaml@v3
       with:
-        ocaml-compiler: ocaml-variants.5.1.1+options,ocaml-option-mingw
+        ocaml-compiler: 5.2.0
         opam-pin: false
-        opam-depext: false
-        opam-repositories: |
-          windows-5.0: https://github.com/dra27/opam-repository.git#windows-5.0
-          sunset: https://github.com/ocaml-opam/opam-repository-mingw.git#sunset
-          default: https://github.com/ocaml/opam-repository.git
 
     - name: Use Node.js
       uses: actions/setup-node@v4