chore(deps): bump certifi from 2026.1.4 to 2026.2.25

Bumps [certifi](https://github.com/certifi/python-certifi) from 2026.1.4 to 2026.2.25.
- [Commits](https://github.com/certifi/python-certifi/compare/2026.01.04...2026.02.25)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2026.2.25
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -18,7 +18,7 @@ humanize==4.15.0
 cachetools==7.0.1
 requests==2.32.5
 urllib3==2.6.3
-certifi==2026.1.4
+certifi==2026.2.25
 jsonschema==4.26.0
 tabulate==0.9.0
 pycoingecko==3.2.0