Test Linux against Swift 5.7

Currently only macOS supports 5.7.1

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

@@ -43,7 +43,8 @@ jobs:
       with:
         version: ${{ matrix.version }}
     - uses: swift-actions/setup-swift@5cdaa9161ad1f55ae39a5ea1784ef96de72f95d9
-      if: runner.os != 'Windows' && matrix.version == 'cached'
+    # Windows doesn't support Swift, and only macOS latest and nightly-latest support Swift 5.7.1.
+      if: runner.os == 'Linux' || (runner.os == 'macOS' && matrix.version == 'cached')
       with:
         swift-version: '5.7'
     - uses: ./../action/init

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

@@ -66,7 +66,8 @@ jobs:
       with:
         go-version: ^1.13.1
     - uses: swift-actions/setup-swift@5cdaa9161ad1f55ae39a5ea1784ef96de72f95d9
-      if: matrix.version == 'cached'
+    # Only macOS latest and nightly-latest support Swift 5.7.1
+      if: runner.os == 'Linux' || matrix.version == 'cached'
       with:
         swift-version: '5.7'
 

.github/workflows/__swift-autobuild.yml

@@ -43,7 +43,8 @@ jobs:
       with:
         version: ${{ matrix.version }}
     - uses: swift-actions/setup-swift@5cdaa9161ad1f55ae39a5ea1784ef96de72f95d9
-      if: matrix.version == 'cached'
+    # Only macOS latest and nightly-latest support Swift 5.7.1
+      if: runner.os == 'Linux' || matrix.version == 'cached'
       with:
         swift-version: '5.7'
     - uses: ./../action/init

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

@@ -49,7 +49,8 @@ jobs:
       with:
         version: ${{ matrix.version }}
     - uses: swift-actions/setup-swift@5cdaa9161ad1f55ae39a5ea1784ef96de72f95d9
-      if: matrix.version == 'cached'
+    # Only macOS latest and nightly-latest support Swift 5.7.1
+      if: runner.os == 'Linux' || matrix.version == 'cached'
       with:
         swift-version: '5.7'
     - uses: ./../action/init