setup-ocaml 3.0.15 (rescript-lang#7164)

Author: cknitt

.github/workflows/ci.yml

@@ -118,8 +118,8 @@ jobs:
 
  env:
  # setup-ocaml opam version cannot be configured
- # we do track its version mannually
- OPAM_VERSION: 2.2.0
+ # we do track its version manually
+ OPAM_VERSION: 2.3.0
  DUNE_PROFILE: release
 
  steps:
@@ -151,7 +151,7 @@ jobs:
  # matrix.ocaml_compiler may contain commas
  - name: Get OPAM cache key
  shell: bash
- run: echo "opam_cache_key=opam-env-v4-${{ matrix.os }}-${{ matrix.ocaml_compiler }}-${{ hashFiles('dune-project') }}" | sed 's/,/-/g' >> $GITHUB_ENV
+ run: echo "opam_cache_key=opam-env-v5-${{ matrix.os }}-${{ matrix.ocaml_compiler }}-${{ hashFiles('dune-project') }}" | sed 's/,/-/g' >> $GITHUB_ENV
 
  - name: Restore OPAM environment
  id: cache-opam-env
@@ -167,7 +167,7 @@ jobs:
  key: ${{ env.opam_cache_key }}
 
  - name: Use OCaml ${{matrix.ocaml_compiler}}
- uses: ocaml/setup-ocaml@v3.0.7
+ uses: ocaml/setup-ocaml@v3.0.15
  if: steps.cache-opam-env.outputs.cache-hit != 'true'
  with:
  ocaml-compiler: ${{matrix.ocaml_compiler}}