Remove ubuntu 18.04 from CI

- Ubuntu 18.04 hasn't been supported in GitHub actions for a while now. See https://github.blog/changelog/2022-08-09-github-actions-the-ubuntu-18-04-actions-runner-image-is-being-deprecated-and-will-be-removed-by-12-1-22/ - So let's remove it.
Jimver · Jul 6, 2023 · 66f6517 · 66f6517
1 parent acce010
commit 66f6517
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
@@ -20,8 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os:
-          [windows-2022, windows-2019, ubuntu-22.04, ubuntu-20.04, ubuntu-18.04]
+        os: [windows-2022, windows-2019, ubuntu-22.04, ubuntu-20.04]
         method: [local, network]
     runs-on: ${{ matrix.os }}