ci: bump more ubuntu images

.github/workflows/build.yml

@@ -36,7 +36,7 @@ jobs:
         uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435 # v4.5.0
         with:
           python-version: 3.8
-      - if: matrix.os == 'ubuntu-18.04'
+      - if: matrix.os == 'ubuntu-20.04'
         run: sudo apt-get install -y libyaml-dev
       - name: Upgrade pip, setuptools
         run: python -m pip install --upgrade pip setuptools
@@ -65,10 +65,7 @@ jobs:
       matrix:
         include:
           # OSs not already tested above
-          - os: ubuntu-18.04
-            artifact_name: capa
-            asset_name: linux
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             artifact_name: capa
             asset_name: linux
           - os: windows-2022

.github/workflows/tests.yml

@@ -74,6 +74,8 @@ jobs:
             python-version: "3.8"
           - os: ubuntu-20.04
             python-version: "3.9"
+          - os: ubuntu-20.04
+            python-version: "3.10"
     steps:
     - name: Checkout capa with submodules
       uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0