chore: reduce build time (#4405)

## About the changes
~~Test if max-workers can speed up test runs~~ No, this didn't help.
Disabling the job that takes longer should help mitigate. We lose the
coverage report but we still test our code:
https://github.com/Unleash/unleash/actions/runs/5751945832/job/15591813034?pr=4405#step:7:2396

This cuts the build time by 50% and moving this to a daily schedule

.github/workflows/build_prs_jest_report.yaml

@@ -1,10 +1,13 @@
-name: PR -> Test & Coverage
+name: Test & Coverage
 
 on:
-  pull_request:
-    paths-ignore:
-      - frontend/**
-      - website/**
+  # pull_request:
+  #   paths-ignore:
+  #     - frontend/**
+  #     - website/**
+  schedule: # Run every day
+    - cron: '0 8 * * *'
+  workflow_dispatch:
 
 jobs:
   build: