[hotfix] remove ndk 28

Author: justice-adams-apple

.github/workflows/pull_request.yml

@@ -54,7 +54,7 @@ jobs:
         cd tests/TestPackage
       enable_android_sdk_build: true
       enable_android_sdk_checks: true
-      android_ndk_versions: "[\"r28c\"]"
+      android_ndk_versions: "[\"r27d\"]"
       # Windows
       windows_build_command: |
         cd tests/TestPackage

.github/workflows/swift_package_test.yml

@@ -178,7 +178,7 @@ on:
       android_ndk_versions:
         type: string
         description: "The NDK versions to use when building with the Swift SDK for Android"
-        default: "[\"r27d\", \"28c\"]"
+        default: "[\"r27d\"]"
       windows_pre_build_command:
         type: string
         description: "Windows Command Prompt command to execute before building the Swift package"