CI: Add OCaml 5.3

Author: robhoes

.github/workflows/main.yml

@@ -26,8 +26,13 @@ jobs:
       matrix:
         runs-on: ["ubuntu-22.04"]
         experimental: [false]
+        ocaml-version: "4.14.2"
         include:
         - runs-on: "ubuntu-22.04-arm"
+          ocaml-version: "4.14.2"
+          experimental: true
+        - runs-on: "ubuntu-22.04"
+          ocaml-version: "5.3.0"
           experimental: true
 
     continue-on-error: ${{ matrix.experimental }}
@@ -48,6 +53,7 @@ jobs:
         uses: ./.github/workflows/setup-xapi-environment
         with:
           xapi_version: ${{ env.XAPI_VERSION }}
+          ocaml_version: ${{ matrix.ocaml-version }}
 
       - name: Build
         run: opam exec -- make

.github/workflows/setup-xapi-environment/action.yml

@@ -5,6 +5,9 @@ inputs:
   xapi_version:
     description: "XenAPI version, pass to configure as --xapi_version=<value>"
     required: true
+  ocaml_version:
+    description: "OCaml compiler version"
+    required: true
 runs:
   using: "composite"
   steps:
@@ -52,7 +55,7 @@ runs:
     - name: Use ocaml
       uses: ocaml/setup-ocaml@v3
       with:
-        ocaml-compiler: ${{ steps.dotenv.outputs.ocaml_version_full }}
+        ocaml-compiler: ${{ inputs.ocaml_version }}
         opam-repositories: |
           xs-opam: ${{ steps.dotenv.outputs.repository }}
         dune-cache: true