CI: Upgrade Ubuntu version to 22.04 (#60)

Author: EZoni

.github/workflows/codeql-analysis.yml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   analyze:
     name: Analyze
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     strategy:
       fail-fast: false

.github/workflows/linux.yml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   QED:
     name: QED with tests, python bindings, Kokkos examples
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env: {CXXFLAGS: "-Werror -Wshadow -Woverloaded-virtual -Wunreachable-code -fsanitize=address -fsanitize=undefined"}
     steps:
     - uses: actions/checkout@v2