Lock "urllib3<2" because urllib3 v2.0 only supports OpenSSL 1.1.1+

Resolves platformio/platformio-core#4639

Author: valeros

builder/frameworks/espidf.py

@@ -1094,6 +1094,8 @@ def _get_installed_pip_packages(python_exe_path):
         return result
 
     deps = {
+        # https://github.com/platformio/platformio-core/issues/4614
+        "urllib3": "<2",
         # https://github.com/platformio/platform-espressif32/issues/635
         "cryptography": ">=2.1.4,<35.0.0",
         "future": ">=0.15.2",