chore(deps): update dependency ubuntu to v22 (#84)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [ubuntu](https://togithub.com/actions/runner-images) | github-runner |
major | `20.04` -> `22.04` |

---

### Configuration

📅 **Schedule**: Branch creation - "before 4am on Saturday" (UTC),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/petertrr/kotlin-multiplatform-diff).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi40MC4zIiwidXBkYXRlZEluVmVyIjoiMzYuNDAuMyIsInRhcmdldEJyYW5jaCI6Im1haW4ifQ==-->

Author: renovate[bot]

.github/workflows/build_and_test.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   build_and_test_with_code_coverage:
     name: Build, test and upload code coverage
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       CI: true
 

.github/workflows/release.yml

@@ -13,7 +13,7 @@ env:
 jobs:
   release_linux:
     name: Build release on main platform (Linux)
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout
         uses: actions/checkout@v3