Migrate configuration to Pydantic settings

[alexgex]

This pull request introduces several important updates to improve configuration management, time handling, and logging throughout the codebase. The main changes include centralizing configuration using the SkaleSettings class, enforcing timezone-aware datetimes, updating logging to better handle sensitive information, and updating dependencies and test fixtures for better consistency and reliability.

Configuration and Initialization Improvements:

• Refactored configuration management to use the SkaleSettings class, updating initialization of BountyAgent, init_skale, and related functions to accept a settings parameter, and centralized settings file paths in configs/__init__.py [1] [2] [3] [4] [5] [6] [7].
• Updated test fixtures to provide and use SkaleSettings, ensuring tests use consistent configuration and environment variables [1] [2] [3] [4].

Timezone and Date Handling:

• Standardized all datetime usage to be timezone-aware and in UTC, replacing datetime.utcnow() and datetime.utcfromtimestamp() with datetime.now(timezone.utc) and datetime.fromtimestamp(..., timezone.utc) across the codebase and tests [1] [2] [3] [4] [5] [6] [7] [8] [9].

Logging and Sensitive Data Handling:

• Enhanced the logging system to pass sgx_url and endpoint into file handlers, and updated the compose_hiding_patterns function to dynamically hide sensitive information based on these values [1] [2] [3].

Dependency and Environment Updates:

• Upgraded the skale.py dependency to version 7.12dev2 for improved compatibility and features.
• Added DEFAULT_GAS_PRICE_WEI to the environment variables and ensured low gas price is used in tests to prevent insufficient funds errors [1] [2].

Test and Helper Function Updates:

• Updated helper and test functions to work with the new configuration system, and fixed method calls to align with the latest SkaleManager interface [1] [2] [3].

These changes collectively improve maintainability, reliability, and security in both production and testing environments.

[codecov]

Codecov Report

❌ Patch coverage is 69.76744% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.64%. Comparing base (0d2a133) to head (61985af).
⚠️ Report is 17 commits behind head on develop.

Files with missing lines	Patch %	Lines
bounty_agent.py	53.84%	6 Missing ⚠️
tools/logger.py	82.60%	4 Missing ⚠️
tools/helper.py	57.14%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #261      +/-   ##
===========================================
- Coverage    71.64%   71.64%   -0.01%     
===========================================
  Files            4        4              
  Lines          261      268       +7     
===========================================
+ Hits           187      192       +5     
- Misses          74       76       +2     

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[dmytrotkk]

why configs.web3 module is still present in the repo?