fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-5798483
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6057353
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6091621
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6091622
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6091623
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5813745
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5813746
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5813750
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5914629
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-6036192
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-6092044

requirements.txt

@@ -4,9 +4,9 @@ pandas-ta==0.3.14b
 
 
 ccxt==3.1.44
-cryptography==41.0.2; platform_machine != 'armv7l'
-cryptography==41.0.2; platform_machine == 'armv7l'
-aiohttp==3.8.4
+cryptography==41.0.6; platform_machine != 'armv7l'
+cryptography==41.0.6; platform_machine == 'armv7l'
+aiohttp==3.9.0
 SQLAlchemy==2.0.16
 python-telegram-bot==20.3