build: try to run FreeBSD/OpenBSD on macos-latest

macos-10.15 environment is being deprecated.

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 92a895c600fc68fcda7b24518ed8d61c2fb16e5a..956e2211cb23b4e743392cacf3c9bd3fcd4e29e7 100644 (file)
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -108,10 +108,10 @@ jobs:
         os:
           - name: freebsd
             version: '13.0'
-            runner: macos-10.15
+            runner: macos-latest
           - name: openbsd
             version: '6.9'
-            runner: macos-10.15
+            runner: macos-latest
     runs-on: ${{ matrix.os.runner }}
     steps:
       - uses: actions/checkout@v2