fix: server/predictors/chemprop/requirements.txt to reduce vulnerabil…

…ities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-TORCH-6619806
- https://snyk.io/vuln/SNYK-PYTHON-TORCH-6649934

server/predictors/chemprop/requirements.txt

@@ -10,6 +10,6 @@ scikit-learn>=0.22.2.post1
 scipy==1.4.1
 tensorboardX>=2.0
 tensorflow>=1.13.1
-torch>=1.5.1
+torch>=2.2.0
 tqdm>=4.45.0
 typed-argument-parser>=1.5.2