Update actions/setup-node action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/setup-node	action	major	v3 -> v4

---

Release Notes

actions/setup-node (actions/setup-node)

v4

Compare Source

---

Configuration

📅 Schedule: Branch creation - "every weekend" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.

Test Links:

Landing Page
MoreCast 2.0
Percentile Calculator
MoreCast
C-Haines
FireBat
FireBat bookmark
Auto Spatial Advisory (ASA)
HFI Calculator

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov]

Codecov Report

Merging #3195 (885b705) into main (a5ab174) will increase coverage by 0.11%.
Report is 7 commits behind head on main.
The diff coverage is 82.12%.

❗ Current head 885b705 differs from pull request most recent head 1da9ea2. Consider uploading reports for the commit 1da9ea2 to get more accurate results

@@            Coverage Diff             @@
##             main    #3195      +/-   ##
==========================================
+ Coverage   82.05%   82.16%   +0.11%     
==========================================
  Files         267      272       +5     
  Lines        9131     9240     +109     
  Branches      413      413              
==========================================
+ Hits         7492     7592     +100     
- Misses       1526     1535       +9     
  Partials      113      113              

Files	Coverage Δ
api/app/db/models/auto_spatial_advisory.py	100.00% <100.00%> (ø)
api/app/db/models/weather_models.py	97.39% <100.00%> (+0.02%)	⬆️
api/app/weather_models/machine_learning.py	90.90% <100.00%> (+4.37%)	⬆️
api/app/weather_models/regression_model.py	100.00% <100.00%> (+12.50%)	⬆️
api/app/weather_models/sample.py	100.00% <100.00%> (ø)
api/app/weather_models/weather_models.py	100.00% <100.00%> (ø)
api/app/weather_models/wind_direction_model.py	100.00% <100.00%> (ø)
api/app/jobs/common_model_fetchers.py	57.80% <50.00%> (-0.34%)	⬇️
api/app/weather_models/wind_direction_utils.py	94.73% <94.73%> (ø)
api/app/weather_models/linear_model.py	88.23% <88.23%> (ø)
... and 2 more

... and 1 file with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more