Feature: Add 'https://' before dps service endpoint

[ChristopheRib63]

Description

What's new?

• Fix Feature: Add 'https://' before dps service endpoint #468

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Tests
• Other

[codecov]

Codecov Report

Merging #471 (d6c0781) into main (80e727d) will not change coverage.
The diff coverage is 50.00%.

@@           Coverage Diff           @@
##             main     #471   +/-   ##
=======================================
  Coverage   60.08%   60.08%           
=======================================
  Files         114      114           
  Lines        3685     3685           
=======================================
  Hits         2214     2214           
  Misses       1471     1471           

Impacted Files	Coverage Δ
...nt/Pages/Edge_Devices/ConnectionStringDialog.razor	0.00% <0.00%> (ø)
...erver/Managers/DeviceProvisioningServiceManager.cs	92.85% <100.00%> (ø)

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