Don't convert valid octal format values to integer

[codecov-commenter]

Codecov Report

Base: 98.31% // Head: 98.31% // Increases project coverage by +0.00% :tada:

Coverage data is based on head (c75440f) compared to base (573d605). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #106 +/- ## ======================================= Coverage 98.31% 98.31% ======================================= Files 10 10 Lines 1125 1126 +1 ======================================= + Hits 1106 1107 +1 Misses 19 19 ``` | [Impacted Files](https://codecov.io/gh/dalibo/pgtoolkit/pull/106?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dalibo) | Coverage Δ | | |---|---|---| | [pgtoolkit/conf.py](https://codecov.io/gh/dalibo/pgtoolkit/pull/106?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dalibo#diff-cGd0b29sa2l0L2NvbmYucHk=) | `98.98% <100.00%> (+<0.01%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dalibo). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dalibo)

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