Don't pin Xcode for nightly tests

Author: mbg

.github/workflows/__export-file-baseline-information.yml

@@ -5,10 +5,6 @@ installGo: "true"
 env:
   CODEQL_ACTION_SUBLANGUAGE_FILE_COVERAGE: true
 steps:
-  - name: Use Xcode 16
-    shell: bash
-    if: runner.os == 'macOS'
-    run: sudo xcode-select -s "/Applications/Xcode_16.app"
   - uses: ./../action/init
     id: init
     with:

.github/workflows/__multi-language-autodetect.yml

@@ -5,7 +5,7 @@ installGo: "true"
 steps:
   - name: Use Xcode 16
     shell: bash
-    if: runner.os == 'macOS'
+    if: runner.os == 'macOS' && matrix.version != 'nightly-latest'
     run: sudo xcode-select -s "/Applications/Xcode_16.app"
 
   - uses: ./../action/init

.github/workflows/__swift-autobuild.yml

@@ -3,10 +3,6 @@ description: "Tests creation of a Swift database using autobuild"
 versions: ["nightly-latest"]
 operatingSystems: ["macos"]
 steps:
-  - name: Use Xcode 16
-    shell: bash
-    if: runner.os == 'macOS'
-    run: sudo xcode-select -s "/Applications/Xcode_16.app"
   - uses: ./../action/init
     id: init
     with:

.github/workflows/__swift-custom-build.yml

@@ -8,7 +8,7 @@ env:
 steps:
   - name: Use Xcode 16
     shell: bash
-    if: runner.os == 'macOS'
+    if: runner.os == 'macOS' && matrix.version != 'nightly-latest'
     run: sudo xcode-select -s "/Applications/Xcode_16.app"
   - uses: ./../action/init
     id: init