Map Amazon Linux 2023 to amazonlinux2023 toolchain infix

Amazon Linux 2023 reports ID=amzn and VERSION_ID=2023 in
/etc/os-release. This combination fell through to the generic
else branch, producing the OS name amzn2023 and thus an invalid
Swift toolchain download URL (swift-...-amzn2023-aarch64.tar.gz),
causing a "Toolchain not found" failure. Special-case it to the
amazonlinux2023 infix that swift.org actually publishes.

Author: jakepetroules

.github/workflows/manual_build_freebsd.yml

@@ -0,0 +1,38 @@
+name: Manual FreeBSD Test
+on: workflow_dispatch
+
+jobs:
+  build_and_test:
+    name: Build and Test
+    env:
+      SWIFT_INSTALL_PATH: "/opt/swift-main"
+      SWIFT_WEB_URL: "https://download.swift.org/tmp-ci-nightly/development/freebsd-14_ci_latest.tar.gz"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - name: Build in FreeBSD
+        id: build
+        uses: vmactions/freebsd-vm@v1
+        with:
+          envs: 'SWIFT_INSTALL_PATH SWIFT_WEB_URL'
+          release: "14.3"
+          sync: rsync
+          copyback: false
+          usesh: true
+          prepare: |
+            fetch -o /tmp/swift.tar.gz "$SWIFT_WEB_URL"
+            mkdir -p /opt/swift-main
+            tar -xzf /tmp/swift.tar.gz -C /opt/swift-main
+            pkg install -y \
+              sqlite3 \
+              python3 \
+              libuuid \
+              curl \
+              brotli \
+              git
+            git config --global init.defaultBranch 'main'
+            "$SWIFT_INSTALL_PATH/usr/bin/swift" --version
+          run: |
+            export PATH="$SWIFT_INSTALL_PATH/usr/bin:$PATH"
+            swift build
+            swift test

.github/workflows/pull_request.yml

@@ -25,7 +25,7 @@ jobs:
     uses: ./.github/workflows/swift_package_test.yml
     with:
       # Linux
-      linux_os_versions: '["jammy", "rhel-ubi9", "amazonlinux2"]'
+      linux_os_versions: '["jammy", "rhel-ubi9", "amazonlinux2", "amazonlinux2023"]'
       linux_host_archs: '["x86_64", "aarch64"]'
       linux_build_command: |
         cd tests/TestPackage

.github/workflows/scripts/install-and-build-with-sdk.sh

@@ -485,6 +485,9 @@ initialize_os_info() {
     elif [[ "$os_id" == "amzn" && "$version_id" == "2" ]]; then
         OS_NAME="amazonlinux2"
         OS_NAME_NO_DOT="amazonlinux2"
+    elif [[ "$os_id" == "amzn" && "$version_id" == "2023" ]]; then
+        OS_NAME="amazonlinux2023"
+        OS_NAME_NO_DOT="amazonlinux2023"
     else
         # Ubuntu, Debian, Fedora
         OS_NAME="${os_id}${version_id}"