microsoft
diff --git a/‎.github/actions/lint/action.yml
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diff --git a/‎python_files/pyproject.toml
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diff --git a/‎python_files/visualstudio_py_testlauncher.py
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@@ -43,7 +43,7 @@ runs:
 
     - name: Run Ruff
       run: |
-        python -m pip install -U "ruff<0.8.0"
+        python -m pip install -U "ruff"
         python -m ruff check .
         python -m ruff format --check
       working-directory: python_files
 
@@ -23,6 +23,7 @@ ignore = [
 
 [tool.ruff]
 line-length = 100
+target-version = "py38"
 exclude = [
     "**/.data",
     "lib",
 
@@ -130,7 +130,7 @@ def send_event(self, name, **args):
             body = {"type": "event", "seq": self.seq, "event": name, "body": args}
             self.seq += 1
             content = json.dumps(body).encode("utf8")
-            headers = ("Content-Length: %d\n\n" % (len(content),)).encode("utf8")
+            headers = f"Content-Length: {len(content)}\n\n".encode()
             self.socket.send(headers)
             self.socket.send(content)