allow equal-signs in CFEP-25 pins

[h-vetinari]

The original version of CFEP-25 used:

test:
  requires:
    - python ={{ python_min }}

This is a natural an allowed syntax in conda, as is

test:
  requires:
    - python =={{ python_min }}

We shouldn't spuriously lint on those, hence allow equal signs in the pattern.

[beckermr]

We needed a smithy and conda build fix due to the equal signs. Once we have conda build 24.11 merged, let's retest before we merge this one.

[beckermr]

Still breaking: https://github.com/conda-forge/conda-forge-webservices/actions/runs/12016308858/job/33496223500

[beckermr]

This PR conda/conda-build#5555 fixes the issue (and I tested it live on a feedstock). We'll need to wait until 25.1.0 to see the fix live.

[h-vetinari]

This PR conda/conda-build#5555 fixes the issue (and I tested it live on a feedstock). We'll need to wait until 25.1.0 to see the fix live.

Cool, thanks a lot! (and nice PR number! 😁)