Update Xcode 16 and add Swift 6 toolchain support on macOS #340

	name: Ubuntu

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	ubuntu_test:
	name: Execute tests on Ubuntu
	strategy:
	fail-fast: false
	matrix:
	# swift_version: ["5.10"]
	container: ["swift:5.10-jammy", "swiftlang/swift:nightly-6.0-jammy"]
	include:
	- container: "swiftlang/swift:nightly-6.0-jammy"
	continue-on-error: true
	runs-on: ubuntu-22.04
	env:
	OPENSWIFTUI_WERROR: 1
	OPENSWIFTUI_SWIFT_TESTING: 1
	OPENGRAPH_ATTRIBUTEGRAPH: 0
	OPENSWIFTUI_COMPATIBILITY_TEST: 0
	OPENSWIFTUI_SWIFT_LOG: 1
	# container: swift:${{ matrix.swift_version }}-jammy
	container: ${{ matrix.container }}
	steps:
	- uses: actions/checkout@v4
	- name: Building and running tests in debug mode with coverage
	run: \|
	swift test \
	-c debug \
	--filter OpenSwiftUITests \
	-Xswiftc -warnings-as-errors \
	--enable-code-coverage \
	--build-path .build-test-debug
	llvm-cov show \
	-instr-profile=.build-test-debug/debug/codecov/default.profdata \
	.build-test-debug/debug/OpenSwiftUIPackageTests.xctest \
	> coverage.txt
	continue-on-error: ${{ matrix.continue-on-error }}
	id: debug-test
	- name: Building and running tests in release mode
	run: \|
	swift test \
	-c release \
	--filter OpenSwiftUITests \
	-Xswiftc -warnings-as-errors \
	--build-path .build-test-release
	continue-on-error: ${{ matrix.continue-on-error }}
	id: release-test
	if: steps.debug-test.outcome == 'success'
	- uses: codecov/codecov-action@v3
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	verbose: true
	continue-on-error: true
	if: steps.debug-test.outcome == 'success'

Provide feedback