upgrade CI operationg system to Fedora 33

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cf9453a14a4ad8be9b9e14651b88594182132f19..4358f6e7d4616e37731653324e0aefbb9aa33827 100644 (file)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,7 +6,7 @@ jobs:
   build_in_fedora_for_amd64_on_docker:
     runs-on: ubuntu-latest
     container:
-      image: fedora:32
+      image: fedora:33
     steps:
     - name: Checkout repository.
       uses: actions/checkout@v2