chore(deps): pin dependencies

This MR contains the following updates:

Package	Update	Change
Flask (changelog)	pin	~=2.2 -> ==2.3.3
PyYAML (source)	pin	~=6.0 -> ==6.0.2
perun.connector (source)	pin	~=3.11 -> ==3.11.0
urllib3 (changelog)	pin	~=1.21 -> ==1.26.20
werkzeug (changelog)	pin	~=2.2 -> ==2.3.8

Add the preset :preserveSemverRanges to your config if you don't want to pin your dependencies.

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