build(deps): bump certifi from 2025.8.3 to 2026.1.4

Bumps [certifi](https://github.com/certifi/python-certifi) from 2025.8.3 to 2026.1.4.
- [Commits](certifi/python-certifi@2025.08.03...2026.01.04)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2026.1.4
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements.txt

@@ -103,9 +103,9 @@ async-timeout==5.0.1 \
 attrs==25.3.0 \
     --hash=sha256:427318ce031701fea540783410126f03899a97ffc6f61596ad581ac2e40e3bc3 \
     --hash=sha256:75d7cefc7fb576747b2c81b4442d4d4a1ce0900973527c011d1030fd3bf4af1b
-certifi==2025.8.3 \
-    --hash=sha256:e564105f78ded564e3ae7c923924435e1daa7463faeab5bb932bc53ffae63407 \
-    --hash=sha256:f6c12493cfb1b06ba2ff328595af9350c65d6644968e5d3a2ffd78699af217a5
+certifi==2026.1.4 \
+    --hash=sha256:9943707519e4add1115f44c2bc244f782c0249876bf51b6599fee1ffbedd685c \
+    --hash=sha256:ac726dd470482006e014ad384921ed6438c457018f4b3d204aea4281258b2120
 ccxt==4.4.96 \
     --hash=sha256:4c44537e2ce00a6ca5d42ab5de3510cb9864b80deb2e2ebf40cd6439a3c0571d \
     --hash=sha256:d5acbbdf55d5eeab2c92b3344753e76899b04ae8e49e47021d219527ed756462