Update CI to Ubuntu 24.04 runner images (#839)

Now that Ubuntu 24.04 images are available on GitHub Actions, we can update from the Ubuntu 22.04 images.

See also:
actions/runner-images#9848
https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md
https://salesforce.quip.com/bu6UA0KImOxJ#temp:C:GZRd13d2ce2d455470495cbd34cf

GUS-W-16238120.

.github/workflows/check_changelog.yml

@@ -9,7 +9,7 @@ permissions:
 
 jobs:
   check-changelog:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     if: (!contains(github.event.pull_request.labels.*.name, 'skip changelog'))
     steps:
       - name: Checkout

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ env:
 
 jobs:
   lint:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -37,7 +37,7 @@ jobs:
         run: RUSTDOCFLAGS="-D warnings" cargo doc --all-features --document-private-items --no-deps
 
   unit-test:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -49,7 +49,7 @@ jobs:
         run: cargo test --all-features
 
   integration-test:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.github/workflows/prepare-release.yml

@@ -19,7 +19,7 @@ env:
 jobs:
   prepare-release:
     name: Prepare Release
-    runs-on: pub-hk-ubuntu-22.04-small
+    runs-on: pub-hk-ubuntu-24.04-ip
     steps:
       - name: Get token for GH application (Linguist)
         uses: actions/create-github-app-token@v1

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
     name: Release
     # Prevent accidentally performing a release from a branch other than `main`.
     if: github.ref == 'refs/heads/main'
-    runs-on: pub-hk-ubuntu-22.04-small
+    runs-on: pub-hk-ubuntu-24.04-ip
     steps:
       - name: Get token for GH application (Linguist)
         uses: actions/create-github-app-token@v1