CI: try new setup-julia action for aarch64 nightly

revert to x64 mac for oscarci, due to memory

.github/workflows/runtests.yml

@@ -92,18 +92,18 @@ jobs:
  strategy:
  matrix:
  julia-version:
- - '1.6'
+ - '1.10'
  - 'nightly'
- os: ['macos-latest']
+ os: [ 'macos-14' ] # aarch64
  include:
- - os: 'macos-14'
- julia-version: '1.10'
+ - os: 'macos-13' # x86_64
+ julia-version: '1.6'
  fail-fast: false
 
  steps:
  - uses: actions/checkout@v4
  - name: "Set up Julia"
- uses: julia-actions/setup-julia@v1
+ uses: julia-actions/setup-julia@v1.9.6
  with:
  version: ${{ matrix.julia-version }}
  - uses: julia-actions/cache@v1

OscarCI.toml

@@ -26,8 +26,8 @@ julia-version = [ "~1.6.0-0", "~1.10.0-0"]
  julia-version = "1.6"
  os = "macos-latest"
 
- [include.macaarch64]
+ [include.macamd64]
  Oscar = "<matching>"
  Polymake = ""
  julia-version = "1.10"
- os = "macos-14"
+ os = "macos-13"