issues/296: Tighten check cert validity script

[komuw]

• Updates: https://github.com/komuw/ong/issues/296

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.24 :tada:

Comparison is base (8b1a122) 73.39% compared to head (0eda3b9) 73.64%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #303 +/- ## ========================================== + Coverage 73.39% 73.64% +0.24% ========================================== Files 42 42 Lines 4792 4799 +7 ========================================== + Hits 3517 3534 +17 + Misses 1022 1015 -7 + Partials 253 250 -3 ``` | [Impacted Files](https://app.codecov.io/gh/komuw/ong/pull/303?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Komu+Wairagu) | Coverage Δ | | |---|---|---| | [internal/acme/acme.go](https://app.codecov.io/gh/komuw/ong/pull/303?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Komu+Wairagu#diff-aW50ZXJuYWwvYWNtZS9hY21lLmdv) | `63.10% <100.00%> (+0.68%)` | :arrow_up: | | [internal/acme/helpers.go](https://app.codecov.io/gh/komuw/ong/pull/303?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Komu+Wairagu#diff-aW50ZXJuYWwvYWNtZS9oZWxwZXJzLmdv) | `64.90% <100.00%> (+4.05%)` | :arrow_up: |

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