Upgrading angular version to 20

[pratickchokhani]

Tested the UI flows in both mac and glinux:
https://screenshot.googleplex.com/C8F6TSv2EQxTHK5
https://screenshot.googleplex.com/KczzbaexHwupQ4F

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.46%. Comparing base (ec11adf) to head (8c4f48b).
⚠️ Report is 18 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1282   +/-   ##
=======================================
  Coverage   47.45%   47.46%           
=======================================
  Files         234      234           
  Lines       26932    26932           
  Branches      599      599           
=======================================
+ Hits        12780    12782    +2     
+ Misses      13417    13415    -2     
  Partials      735      735           

Components	Coverage Δ
backend-apis	42.60% <ø> (ø)
backend-library	51.83% <ø> (ø)
cli	24.44% <ø> (ø)
frontend	38.68% <ø> (+0.04%)	⬆️

Files with missing lines	Coverage Δ
ui/src/app/app.component.ts	50.00% <ø> (ø)
...ponents/add-index-form/add-index-form.component.ts	97.91% <ø> (ø)
...ponents/add-new-column/add-new-column.component.ts	70.73% <ø> (ø)
...nts/add-new-sequence/add-new-sequence.component.ts	92.85% <ø> (ø)
...-primary-key/add-shard-id-primary-key.component.ts	41.37% <ø> (ø)
...dialog/bulk-drop-restore-table-dialog.component.ts	63.15% <ø> (ø)
...-profile-form/connection-profile-form.component.ts	34.21% <ø> (ø)
...nents/database-loader/database-loader.component.ts	66.66% <ø> (ø)
...omponents/dataflow-form/dataflow-form.component.ts	100.00% <ø> (ø)
...s/direct-connection/direct-connection.component.ts	37.83% <ø> (ø)
... and 33 more

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[shreyakhajanchi]

Can you please add the test details in the description?

[pratickchokhani]

Can you please add the test details in the description?

Have added it in the comments.

[shreyakhajanchi]

The PR looks fine, just verify the airlock compatibility: https://g3doc.corp.google.com/third_party/harbourbridge/g3doc/operations/ui_package_update_process.md?cl=head

And also check if any changes are required in the release script in git-on-borg