ci: add macos-13 to test matrix (#14)

* ci: add macos-13 to test matrix

* Include macos-13-x1 runner

* Fix unsupported runner

---------

Co-authored-by: Sebastian Ehlert <[email protected]>

Author: wpbonelli

.github/workflows/test.yml

@@ -19,7 +19,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-20.04, macos-12, macos-11, windows-2022, windows-2019]
+        os:
+          - ubuntu-22.04
+          - ubuntu-20.04
+          - macos-13
+          - macos-12
+          - macos-11
+          - windows-2022
+          - windows-2019
         toolchain:
           - {compiler: gcc, version: 12}
           - {compiler: gcc, version: 11}