Bump ccxt from 1.95.30 to 2.0.25

Bumps [ccxt](https://github.com/ccxt/ccxt) from 1.95.30 to 2.0.25.
- [Release notes](https://github.com/ccxt/ccxt/releases)
- [Changelog](https://github.com/ccxt/ccxt/blob/master/exchanges.cfg)
- [Commits](https://github.com/ccxt/ccxt/compare/1.95.30...2.0.25)

---
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

@@ -4,7 +4,7 @@ pandas==1.5.0; platform_machine != 'armv7l'
 pandas==1.4.3; platform_machine == 'armv7l'
 pandas-ta==0.3.14b
 
-ccxt==1.95.30
+ccxt==2.0.25
 # Pin cryptography for now due to rust build errors with piwheels
 cryptography==38.0.1
 aiohttp==3.8.3