[build] Disable ConnectionTimeout test (blocking), Win GitHub Action.

[maxsharabayko]

The test TestConnectionTimeout.BlockingLoop keeps failing in GitHub Action Windows.
It seems related to VM changes, because re-running the test for v1.4.4 in GitHub Action Win also led to the test failure, while previously it was passing.
The test is also passing on a local Windows machine.

I find nothing more clever to do except disable the test in Windows GitHub Action.

[ethouris]

The --gtest_filter is an option for the test executable, not for ctest command.

       -E <regex>, --exclude-regex <regex>
              Exclude tests matching regular expression.

              This option tells CTest to NOT run the tests whose names match the given regular expression.