Overly restrictive dependency pinning prevents installation alongside other packages

[tsm1th]

Problem

The current dependency specifications use exact version pinning (==), which prevents pycentral from being installed alongside other packages that have overlapping dependencies.

For example, if another package needs PyYAML>=6.0,<7.0 for a security patch, but pycentral requires exactly PyYAML==6.0.3, the installation will fail.

Current Behavior

dependencies = [
    "PyYAML==6.0.3",
    "oauthlib==3.2.2",
    ...
]

Ideal Behavior

dependencies = [
    "PyYAML>=6.0,<7.0",
    "oauthlib>=3.2,<4.0",
    ...
]