fix property name

[djbrown]

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Description

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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[djbrown]

This fixes the error: selenium.common.exceptions.InvalidArgumentException: Message: Invalid proxyType value: unspecified
To reproduce:

from selenium.webdriver import Firefox
from selenium.webdriver.common.proxy import Proxy
from selenium.webdriver.firefox.options import Options as FirefoxOptions

options = FirefoxOptions()
options.proxy = Proxy({'sslProxy': "my.proxy.host:8080"})
Firefox(options=options)

[titusfortner]

Yes, thanks for fixing!

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (70c67ed) 57.28% compared to head (0f31b30) 57.28%.

❗ Current head 0f31b30 differs from pull request most recent head 51d49f2. Consider uploading reports for the commit 51d49f2 to get more accurate results

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Additional details and impacted files

@@           Coverage Diff           @@
##            trunk   #12237   +/-   ##
=======================================
  Coverage   57.28%   57.28%           
=======================================
  Files          86       86           
  Lines        5487     5487           
  Branches      226      226           
=======================================
  Hits         3143     3143           
  Misses       2118     2118           
  Partials      226      226           

Impacted Files	Coverage Δ
py/selenium/webdriver/common/selenium_manager.py	64.06% <0.00%> (ø)

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[diemol]

Thank you, @djbrown!