upgrade runner to 22.04

Author: badGarnet

.github/workflows/ci.yaml

@@ -19,11 +19,11 @@ jobs:
       fail-fast: true
       matrix:
         include:
-          - {name: '3.12', python: '3.12', os: ubuntu-20.04, tox: py312}
-          - {name: '3.11', python: '3.11', os: ubuntu-20.04, tox: py311}
-          - {name: '3.10', python: '3.10', os: ubuntu-20.04, tox: py310}
-          - {name: '3.9', python: '3.9', os: ubuntu-20.04, tox: py39}
-          - {name: '3.8', python: '3.8', os: ubuntu-20.04, tox: py38}
+          - {name: '3.12', python: '3.12', os: ubuntu-22.04, tox: py312}
+          - {name: '3.11', python: '3.11', os: ubuntu-22.04, tox: py311}
+          - {name: '3.10', python: '3.10', os: ubuntu-22.04, tox: py310}
+          - {name: '3.9', python: '3.9', os: ubuntu-22.04, tox: py39}
+          - {name: '3.8', python: '3.8', os: ubuntu-22.04, tox: py38}
     steps:
       - uses: actions/checkout@v3