Update dependency ubuntu to v22 (#473)

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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

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Automerge - At any time (no schedule defined).

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are satisfied.

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rebase/retry checkbox.

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.github/workflows/build-and-test.yml

@@ -14,7 +14,7 @@ env:
 jobs:
   build:
     name: Just CI
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Set CARGO_TARGET_DIR
       run: echo "CARGO_TARGET_DIR=$HOME/target" >> $GITHUB_ENV

.github/workflows/publish-agb.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Install build tools
         run: sudo apt-get update && sudo apt-get install build-essential zip -y

.github/workflows/update-lockfiles.yml

@@ -11,7 +11,7 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Set CARGO_TARGET_DIR
         run: echo "CARGO_TARGET_DIR=$HOME/target" >> $GITHUB_ENV