chore: fix unit tests for python 3.13, pin pandas < 3

[nosheen-adil]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Description

Fix unit tests for python 3.13 by pinning pandas version < 3.

Additionally, stop testing on python 3.9, since this version stopped working on the windows server, and we are planning to deprecate support for this version since it's reached EOL.

Testing Instructions

make clean
make env PYTHON=python3.13
THIRD_PARTY_DIR=$(pwd)/../mosaic2/third_party make build
THIRD_PARTY_DIR=$(pwd)/../mosaic2/third_party TEST_DATA_DIR=$(pwd)/../mosaic2/test_data make test

Alternatively, if you can't build the wheel file, here's one already built: https://bruker-my.sharepoint.com/:u:/p/nosheen_adil/IQDMEm5gCl-vSbCjZhv6q6NAAWDD2Ptt_yZnaq7wVbuh-E4?email=Brandon.Cazander%40bruker.com&e=UyeCCM

python3.13 -m venv venv
source venv/bin/activate
pip install isx-2.1.0-cp313-cp313-manylinux_2_34_x86_64.whl
python -c "import isx"

Added/updated tests?

• Yes
• No, and this is why: Only need to validate existing behavior.
• I need help with writing tests