Update nf-test workflow

[buehlere]

Our testing workflow has fallen behind nf-core's: https://nf-co.re/blog/2024/maintainers-minutes-2024-11-29.

It's starting to cause issues with CI/CD. For example with how nf-test is downloaded: https://github.com/mskcc-omics-workflows/modules/actions/runs/12381160481/job/34559103879?pr=172

nf-test is now split into multiple workflow:

• actions: https://github.com/nf-core/modules/blob/b31e778c8480f30ed1b13e1ccbf2e43333f85809/.github/actions/nf-test-action/action.yml
• test: https://github.com/nf-core/modules/blob/b31e778c8480f30ed1b13e1ccbf2e43333f85809/.github/workflows/nf-test.yml
• excluding conda: https://github.com/nf-core/modules/blob/b31e778c8480f30ed1b13e1ccbf2e43333f85809/.github/conda_skip.yml

We'll need to match these new testing workflows.

[buehlere]

I tried switching to the new CI/CD and it didn't fix the singularity issue: https://github.com/mskcc-omics-workflows/modules/pull/174/files#diff-5cd9e7e35a43dae25124955137a4cfd3defccc72c0c701844cd857cff0f4aeeb

[buehlere]

The issue was not enabling apptainer:

modules/tests/config/nf-test.config

Lines 35 to 38 in deb2a4e

	apptainer {
	apptainer.enabled = true
	apptainer.autoMounts = true
	}

This PR should fix things: #174 . It also updates the CI.