Update dependency ubuntu to v24 (#772)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [ubuntu](https://redirect.github.com/actions/runner-images) |
github-runner | major | `22.04` -> `24.04` |

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
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 was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/agbrs/agb).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC45Ny4wIiwidXBkYXRlZEluVmVyIjoiMzguOTcuMCIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6W119-->

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

@@ -17,7 +17,7 @@ env:
 jobs:
   build:
     name: Just CI
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Set CARGO_TARGET_DIR
         run: echo "CARGO_TARGET_DIR=$HOME/target" >> $GITHUB_ENV

.github/workflows/build-site.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   build:
     name: Build website
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Set CARGO_TARGET_DIR
         run: echo "CARGO_TARGET_DIR=$HOME/target" >> $GITHUB_ENV

.github/workflows/publish-agb.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Install build tools
         run: sudo apt-get update && sudo apt-get install build-essential zip -y