Temporarily lock to Xcode < 16.3

We have build failures in 16.3, which appears to now be the default
Xcode version on some (but not all) runner instances. Once it's
available on all runner instances, we'll fix these issues in #253.

Author: lawrence-forooghian

.github/workflows/check.yaml

@@ -23,7 +23,7 @@ jobs:
       # This step can be removed once the runners’ default version of Xcode is 16 or above
       - uses: maxim-lobanov/setup-xcode@v1
         with:
-          xcode-version: 16
+          xcode-version: 16.2
 
       # We use caching for Mint because at the time of writing SwiftLint took about 5 minutes to build in CI, which is unacceptably slow.
       # https://github.com/actions/cache/blob/40c3b67b2955d93d83b27ed164edd0756bc24049/examples.md#swift---mint
@@ -50,7 +50,7 @@ jobs:
       # This step can be removed once the runners’ default version of Xcode is 16 or above
       - uses: maxim-lobanov/setup-xcode@v1
         with:
-          xcode-version: 16
+          xcode-version: 16.2
 
       - name: Spec coverage
         run: swift run BuildTool spec-coverage
@@ -69,7 +69,7 @@ jobs:
       # This step can be removed once the runners’ default version of Xcode is 16 or above
       - uses: maxim-lobanov/setup-xcode@v1
         with:
-          xcode-version: 16
+          xcode-version: 16.2
 
       - id: generation-step
         run: swift run BuildTool generate-matrices >> $GITHUB_OUTPUT
@@ -229,7 +229,7 @@ jobs:
       # This step can be removed once the runners’ default version of Xcode is 16 or above
       - uses: maxim-lobanov/setup-xcode@v1
         with:
-          xcode-version: 16
+          xcode-version: 16.2
 
       # Dry run upload-action to get base-path url
       - name: Dry-Run Upload (to get url)

Sources/BuildTool/BuildTool.swift

@@ -136,7 +136,7 @@ struct GenerateMatrices: ParsableCommand {
     mutating func run() throws {
         let tooling = [
             [
-                "xcodeVersion": "16",
+                "xcodeVersion": "16.2",
             ],
         ]