CI: update Fedora to 34

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

.github/workflows/test.yml

@@ -82,15 +82,15 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: "Cache ~/.vagrant.d/boxes, using hash of Vagrantfile.fedora33"
+      - name: "Cache ~/.vagrant.d/boxes, using hash of Vagrantfile.fedora34"
         uses: actions/cache@v2
         with:
           path: ~/.vagrant.d/boxes
-          key: vagrant-${{ hashFiles('Vagrantfile.fedora33') }}
+          key: vagrant-${{ hashFiles('Vagrantfile.fedora34') }}
 
       - name: prepare vagrant
         run: |
-          ln -sf Vagrantfile.fedora33 Vagrantfile
+          ln -sf Vagrantfile.fedora34 Vagrantfile
           # Retry if it fails (download.fedoraproject.org returns 404 sometimes)
           vagrant up || vagrant up
           vagrant ssh-config >> ~/.ssh/config

Vagrantfile.fedora34

@@ -3,7 +3,7 @@
 
 Vagrant.configure("2") do |config|
 # Fedora box is used for testing cgroup v2 support
-  config.vm.box = "fedora/33-cloud-base"
+  config.vm.box = "fedora/34-cloud-base"
   config.vm.provider :virtualbox do |v|
     v.memory = 2048
     v.cpus = 2