Pin flask version in tests

[EnricoMi]

No description provided.

[github-actions]

Unit Test Results (Linux)

       54 files         54 suites   2m 37s ⏱️
     267 tests      267 ✔️     0 💤 0 ❌
14 418 runs  13 986 ✔️ 432 💤 0 ❌

Results for commit fdf998c.

[github-actions]

Unit Test Results (setup-python)

       54 files         54 suites   2m 37s ⏱️
     267 tests      267 ✔️     0 💤 0 ❌
14 418 runs  13 986 ✔️ 432 💤 0 ❌

Results for commit fdf998c.

[github-actions]

Unit Test Results (macOS)

       54 files         54 suites   2m 37s ⏱️
     267 tests      267 ✔️     0 💤 0 ❌
14 418 runs  13 986 ✔️ 432 💤 0 ❌

Results for commit fdf998c.

[github-actions]

Unit Test Results (Dockerfile)

       54 files         54 suites   2m 37s ⏱️
     267 tests      267 ✔️     0 💤 0 ❌
14 418 runs  13 986 ✔️ 432 💤 0 ❌

Results for commit fdf998c.

[github-actions]

Unit Test Results (Test Files)

  25 files      4 errors  22 suites   39m 12s ⏱️
272 tests 227 ✔️ 18 💤 23 ❌ 4 🔥
443 runs  357 ✔️ 55 💤 26 ❌ 5 🔥

For more details on these parsing errors, failures and errors, see this check.

Results for commit fdf998c.

[github-actions]

Unit Test Results (Docker Image)

       54 files         54 suites   2m 37s ⏱️
     267 tests      267 ✔️     0 💤 0 ❌
14 418 runs  13 986 ✔️ 432 💤 0 ❌

Results for commit fdf998c.

[github-actions]

Unit Test Results (Windows)

       54 files         54 suites   2m 37s ⏱️
     267 tests      267 ✔️     0 💤 0 ❌
14 418 runs  13 986 ✔️ 432 💤 0 ❌

Results for commit fdf998c.

[github-actions]

Unit Test Results (reference)

       54 files  +     12         54 suites  +12   2m 37s ⏱️ +49s
     267 tests ±       0       267 ✔️ +       3      0 💤 ±0  0 ❌  -   3 
14 418 runs  +3 204  13 986 ✔️ +3 222  432 💤 ±0  0 ❌  - 18 

Results for commit fdf998c. ± Comparison against base commit dd02870.