fix deprecated output flag

Author: YunchuWang

setup.py

@@ -277,7 +277,7 @@ def _install_extensions(self):
         env['TERM'] = 'xterm'  # ncurses 6.1 workaround
         try:
             subprocess.run(
-                args=['dotnet', 'build', '-o', '.'], check=True,
+                args=['dotnet', 'build', '--property:OutputPath=.'], check=True,
                 cwd=str(self.extensions_dir),
                 stdout=sys.stdout, stderr=sys.stderr, env=env)
         except Exception:  # NoQA
@@ -422,7 +422,7 @@ def _compile_webhost(webhost_dir: pathlib.Path):
 
         try:
             subprocess.run(
-                args=['dotnet', 'build', 'WebJobs.Script.sln', '-o', 'bin'],
+                args=['dotnet', 'build', 'WebJobs.Script.sln', '--property:OutputPath=bin'],
                 check=True,
                 cwd=str(webhost_dir),
                 stdout=sys.stdout, stderr=sys.stderr)