Swift: use ubuntu-latest

Author: Paolo Tranquilli

.github/workflows/swift.yml

@@ -50,14 +50,14 @@ jobs:
       - uses: ./swift/actions/build-and-test
   build-and-test-linux:
     if: github.repository_owner == 'github'
-    runs-on: ubuntu-latest-xl
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: ./swift/actions/build-and-test
   qltests-linux:
     if: github.repository_owner == 'github'
     needs: build-and-test-linux
-    runs-on: ubuntu-latest-xl
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: ./swift/actions/run-ql-tests

swift/README.md

@@ -113,3 +113,8 @@ In particular for breakpoints to work you might need to setup the following remo
 ### Thread safety
 
 The extractor is single-threaded, and there was no effort to make anything in it thread-safe.
+
+### Updating the swift compiler version
+
+This can only be done with access to the internal repository at the moment. Some (incomplete) instructions are
+found [here](third_party/resources/updating.md).