Merge pull request #171 from dtolnay/up

Update Linux arm64 runner to Ubuntu 24.04

Author: dtolnay

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest, windows-11-arm, ubuntu-22.04-arm]
+        os: [ubuntu-latest, macos-latest, windows-latest, windows-11-arm, ubuntu-24.04-arm]
         rust: [nightly, beta, stable, 1.62.0, stable 18 months ago, stable minus 8 releases]
         include:
           - os: ubuntu-latest