Python codeql analysis hangs

**Description of the issue**

I added a simple/default python config to a repo (https://github.com/envoyproxy/pytooling/commit/11d2fe8a6535444f9a3eba1d91d15e32362375db)

When it runs it always hangs at exactly the same place - the tail of the logs:

```console
Starting evaluation of codeql/python-queries/Security/CWE-730/PolynomialReDoS.ql.
Starting evaluation of codeql/python-queries/Security/CWE-730/ReDoS.ql.
Starting evaluation of codeql/python-queries/Security/CWE-730/RegexInjection.ql.
Starting evaluation of codeql/python-queries/Security/CWE-918/FullServerSideRequestForgery.ql.
Starting evaluation of codeql/python-queries/Diagnostics/ExtractionWarnings.ql.
[2/31 eval 2ms] Evaluation done; writing results to codeql/python-queries/Diagnostics/ExtractionWarnings.bqrs.
Starting evaluation of codeql/python-queries/Diagnostics/SuccessfullyExtractedFiles.ql.
[3/31 eval 101ms] Evaluation done; writing results to codeql/python-queries/Diagnostics/SuccessfullyExtractedFiles.bqrs.
Starting evaluation of codeql/python-queries/Summary/LinesOfCode.ql.
[4/31 eval 5ms] Evaluation done; writing results to codeql/python-queries/Summary/LinesOfCode.bqrs.
Starting evaluation of codeql/python-queries/Summary/LinesOfUserCode.ql.
[5/31 eval 10.5s] Evaluation done; writing results to codeql/python-queries/Summary/LinesOfUserCode.bqrs.
Error: The operation was canceled.
```

(I cancelled it after it had run for an 1.5 hours - but it hangs at the same place almost immediately)