Bump ccxt from 3.1.44 to 4.0.12

Bumps [ccxt](https://github.com/ccxt/ccxt) from 3.1.44 to 4.0.12.
- [Release notes](https://github.com/ccxt/ccxt/releases)
- [Changelog](https://github.com/ccxt/ccxt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ccxt/ccxt/compare/3.1.44...4.0.12)

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

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

requirements.txt

@@ -2,7 +2,7 @@ numpy==1.24.3
 pandas==2.0.3
 pandas-ta==0.3.14b
 
-ccxt==3.1.44
+ccxt==4.0.12
 cryptography==41.0.1; platform_machine != 'armv7l'
 cryptography==40.0.1; platform_machine == 'armv7l'
 aiohttp==3.8.4