chore: run integration tests under Ubuntu 22.04 in order to have Glibc >= 2.32.0

The error was:
/home/runner/.local/share/mise/installs/hurl/6.1.1/hurl-6.1.1-x86_64-unknown-linux-gnu/bin/hurl:
/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by
/home/runner/.local/share/mise/installs/hurl/6.1.1/hurl-6.1.1-x86_64-unknown-linux-gnu/bin/hurl)

Correction for 1db016b commit.

Author: php-coder

Diff for: .github/workflows/integration-tests.yml

@@ -20,7 +20,7 @@ jobs:
   run-integration-tests:
     name: Integration Tests
     # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idruns-on
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     # https://docs.github.com/en/actions/using-jobs/using-a-matrix-for-your-jobs
     strategy:
       # https://docs.github.com/en/actions/using-jobs/using-a-matrix-for-your-jobs#handling-failures