fix: psycopg in operation

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.09% :tada:

Comparison is base (faa5094) 82.31% compared to head (682d613) 82.41%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #149 +/- ## ========================================== + Coverage 82.31% 82.41% +0.09% ========================================== Files 65 65 Lines 2036 2036 ========================================== + Hits 1676 1678 +2 + Misses 360 358 -2 ``` | [Files Changed](https://app.codecov.io/gh/akrherz/iem-web-services/pull/149?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=daryl+herzmann) | Coverage Δ | | |---|---|---| | [src/iemws/services/mos.py](https://app.codecov.io/gh/akrherz/iem-web-services/pull/149?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=daryl+herzmann#diff-c3JjL2llbXdzL3NlcnZpY2VzL21vcy5weQ==) | `47.36% <ø> (ø)` | | | [src/iemws/services/raobs\_by\_year.py](https://app.codecov.io/gh/akrherz/iem-web-services/pull/149?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=daryl+herzmann#diff-c3JjL2llbXdzL3NlcnZpY2VzL3Jhb2JzX2J5X3llYXIucHk=) | `52.17% <ø> (ø)` | | | [src/iemws/services/currents.py](https://app.codecov.io/gh/akrherz/iem-web-services/pull/149?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=daryl+herzmann#diff-c3JjL2llbXdzL3NlcnZpY2VzL2N1cnJlbnRzLnB5) | `79.59% <100.00%> (+4.08%)` | :arrow_up: |

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