Add pragma for bcrypt.lib - Fix win build with cmake

[Kal42]

Description

If we build with cmake on windows, it's missing the link to bcrypt.lib.
Add the pragma in the code, like for the winsock ws2.lib.

PR checklist

Please tick as appropriate and edit the reasons (e.g.: "backport: not needed because this is a new feature")

• changelog not required
• 3.6 backport not required
• 2.28 backport not required
• tests not required

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