Update transformers requirement in setup.py to match requirements.txt

[maxfriedrich]

Hi, #2574 was not enough to set a new minimum transformers version, pip will still install version 4.32.0 even though it's not compatible.

e.g.

> pip install transformers==4.31.0 git+https://github.com/UKPLab/sentence-transformers.git
ERROR: Cannot install sentence-transformers==2.7.0.dev0 and transformers==4.31.0 because these
package versions have conflicting dependencies.

> pip install transformers==4.32.0 git+https://github.com/UKPLab/sentence-transformers.git
(works fine)

[maxfriedrich]

FYI, I also opened a PR on the conda-forge feedstock to update dependencies conda-forge/sentence-transformers-feedstock#37

[tomaarsen]

Hello!

Thanks for catching this; I forgot that Sentence Transformers still stores the versions in two places.

• Tom Aarsen

[tomaarsen]

Thanks a bunch!