chore(deps): update dependency ops to v2.12.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ops (changelog)	==2.11.0 -> ==2.12.0

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Release Notes

canonical/operator (ops)

v2.12.0

Compare Source

Features

• Added Model.get_cloud_spec which uses the credential-get hook tool to get details of the cloud where the model is deployed (#​1152)

Fixes

• Update Pebble Notices get_notices parameter name to users=all (previously select=all) (#​1146)
• Warn when an observer weakref is lost (#​1142)
• More robust validation of observer signatures (#​1147)
• Change Model.relation.app type from Application|None to Application (#​1151)
• Fix attaching storage in Harness before begin (#​1150)
• Fixed an issue where pebble.Client.exec might leak a socket.timeout (builtins.TimeoutError) exception (#​1155)
• Add a consistency check and default network to add_relation (#​1138)
• Don't special-case get_relation behaviour in leader-elected (#​1156)
• Accept type: secret for config options (#​1167)

Refactoring

• Refactor main.py, creating a new _Manager class (#​1085)

Documentation

• Use "integrate with" rather than "relate to" (#​1145)
• Updated code examples in the docstring of ops.testing from unittest to pytest style (#​1157)
• Add peer relation details in Harness.add_relation docstring (#​1168)
• Update Read the Docs Sphinx Furo theme to use Canonical's latest styling (#​1163, #​1164, #​1165)

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Test coverage for 7d9b5ac

Name                    Stmts   Miss Branch BrPart  Cover   Missing
-------------------------------------------------------------------
src/agent_observer.py      42      0      4      0   100%
src/charm.py               63      0     10      0   100%
src/charm_state.py         59      4      8      1    93%   114, 172-174
src/service.py             99      5     14      5    91%   94-96, 108->120, 135, 167, 204->208, 206->204
-------------------------------------------------------------------
TOTAL                     263      9     36      6    95%

Static code analysis report

Run started:2024-03-28 17:43:49.217527

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1140
  Total lines skipped (#nosec): 0
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):