Nempy

Fixes a few issues:
- specifies version 1.16rc0 for mip-python (solver interface). This is a pre-release of mip-python so not ideal, but the other recent version are having install issues across mac, linux, and windows. Version 1.16rc0 only seems to be having issues on mac so it the best option for now, but we will update when a better one is available.
- Changes implementation of solver interface to avoid a pandas warning
- Corrects some errors in the bidstack example.
- Bumps default requests version in poetry.lock (security fix)
- Changes python version in poetry to ">=3.8,<3.13"

This update to Nempy:

- Adds the very fast frequency raise and lower market. These use the names lower_1s and raise_sec1 in the nempy inputs tables. Thanks mlee94 for pull request 20 which added this functionality.
- Removes some redundant reloading of input data. Thank yueXiao2 for PR 16
- Bumps urllib3 from 2.0.4 to 2.0.6 which resolves a security issue in urllib, see 21
- Fixes some typos in examples

Adds functionality for calculating constraint RHS values and implementing the Basslink switch run, see https://nempy.readthedocs.io/en/latest/historical.html#module-nempy.historical_inputs.rhs_calculator, and https://nempy.readthedocs.io/en/latest/examples.html#detailed-recreation-of-historical-dispatch-with-basslink-switch-run respectively.

Fixes errors in the implementation of fast start unit ramp rates and joint regulation and ramping constraints.

Fixes bug described in 14 Thanks dehorsley!

Fixes bug described in 13 Thanks dec-heim!

Corrects documentation as per pull request 12 Thanks yueXiao2!

Fix the bug that v1.1.4 was attempting to fix, with not being about to do over-constrained dispatch re-runs without both FCAS and generic constraints.

Additionally, fix a bug with the XMLCacheManager where downloads of XML files would randomly fail, have implemented functionality to re-attempt the download after waiting 100 seconds which appears to work well.

This update fixes a bug where the over-constrained dispatch rerun functionality would fail if both FCAS and generic constraints weren't used.