Fix mambaforge issue in STARDIS tests

[atharva-2001]

📝 Description

Type: 🪲 bugfix

Changes the action so that stardis tests work.
tardis-sn/stardis#213 will need merging for this to work.

📌 Resources

Examples, notebooks, and links to useful references.

🚦 Testing

How did you test these changes?

• Testing pipeline
• Other method (describe)
• My changes can't be tested (explain why)

☑️ Checklist

• I requested two reviewers for this pull request
• I updated the documentation according to my changes
• I built the documentation by applying the build_docs label

Note: If you are not allowed to perform any of these actions, ping (@) a contributor.

[tardis-bot]

*beep* *bop*
Hi human,
I ran ruff on the latest commit (28f12bb).
Here are the outputs produced.
Results can also be downloaded as artifacts here.
Summarised output:

4	W293	[*] Blank line contains whitespace
3	W291	[*] Trailing whitespace
1	E999	[ ] SyntaxError: Expected an expression
1	W292	[*] No newline at end of file

Complete output(might be large):

.github/workflows/stardis-tests.yml:3:4: E999 SyntaxError: Expected an expression
.github/workflows/stardis-tests.yml:20:1: W293 [*] Blank line contains whitespace
.github/workflows/stardis-tests.yml:37:11: W291 [*] Trailing whitespace
.github/workflows/stardis-tests.yml:47:15: W291 [*] Trailing whitespace
.github/workflows/stardis-tests.yml:52:1: W293 [*] Blank line contains whitespace
.github/workflows/stardis-tests.yml:61:1: W293 [*] Blank line contains whitespace
.github/workflows/stardis-tests.yml:66:1: W293 [*] Blank line contains whitespace
.github/workflows/stardis-tests.yml:72:32: W291 [*] Trailing whitespace
.github/workflows/stardis-tests.yml:73:20: W292 [*] No newline at end of file
Found 9 errors.
[*] 8 fixable with the `--fix` option.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.51%. Comparing base (2aa6732) to head (e1c859e).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2839      +/-   ##
==========================================
- Coverage   70.89%   70.51%   -0.39%     
==========================================
  Files         209      209              
  Lines       15589    15589              
==========================================
- Hits        11052    10992      -60     
- Misses       4537     4597      +60     

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