resolve build dependency conflict for urllib3, unify python version to 3.9.13

[pgranieri]

Problem:

• The espn_api dependency list is conflicting, and causes a build failure when trying to compose the docker image.
• The python version is set to different versions across the repo
• The docker compose file uses a deprecated version tag

[...]
    > [4/4] RUN python setup.py install:
2.777 Searching for certifi>=2017.4.17
2.777 Reading https://pypi.org/simple/certifi/
2.858 Downloading https://files.pythonhosted.org/packages/e5/48/1549795ba7742c948d2ad169c1c8cdbae65bc450d6cd753d124b17c8cd32/certifi-2025.8.3-py3-none-any.whl#sha256=f6c12493cfb1b06ba2ff328595af9350c65d6644968e5d3a2ffd78699af217a5
2.899 Best match: certifi 2025.8.3
2.899 Processing certifi-2025.8.3-py3-none-any.whl
2.901 Installing certifi-2025.8.3-py3-none-any.whl to /usr/local/lib/python3.9/site-packages
2.909 Adding certifi 2025.8.3 to easy-install.pth file
2.911
2.911 Installed /usr/local/lib/python3.9/site-packages/certifi-2025.8.3-py3.9.egg
2.911 error: urllib3 2.5.0 is installed but urllib3<=2.2.3 is required by {'espn-api'}
[...]

Solution:

• set the urllib3 dependency to be explicitly <=2.2.3, the same version expected by espn_api currently.
• update the python version to be explicitly 3.9.13 across the repo.
• remove deprecated version tag from the docker compose file

Testing: was able to successfully run docker compose up -d using the new config, and the github test action workflows passed in my fork on push

$ docker compose up -d --build
[...]
#9 2.742 Finished processing dependencies for gamedaybot==0.3.1
#9 DONE 2.9s

#10 exporting to image
#10 exporting layers
#10 exporting layers 0.2s done
#10 writing image sha256:17f3b228560ea4f93b84eccf5202557103363e9ef0def9bbab6df8b33e726c1a done
#10 naming to docker.io/library/pgranieri_ffcb-gamedaybot done
#10 DONE 0.2s

#11 resolving provenance for metadata file
#11 DONE 0.0s
[+] Running 2/2
 ✔ pgranieri_ffcb-gamedaybot              Built                                                                                                                                        0.0s
 ✔ Container pgranieri_ffcb-gamedaybot-1  Started

[dtcarls]

Thank you for the PR. Looks good.