Add Spark 4.0 support

[dolfinus]

Change Summary

• Update CI matrix to include Spark 4.x. By default, it is not used for tests, unless some integration has been changed (like 2.x).
• Spark 4.x also supports Java 22, include it to Readme & CI matrix.
• Update JDBCConnection methods to be compatible with Spark 4.0 JDBCUtils methods signatures.
• Update XML class get_packages() and check_if_supported() methods, as Spark 4.0 includes XML support.
• Since Spark 4.0, DecimalType(38, 10).typeName() started returning decimal(38, 10) instead of decimal, which breaks some Oracle tests. Updated SparkTypeToHWM implementation to have direct mapping between Spark data type classes and HWM classes.

Notes:

• Skip Excel tests on Spark 4.0, as there is no package version.

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 10 lines in your changes missing coverage. Please review.

Project coverage is 92.59%. Comparing base (84a85a4) to head (2101333).

Files with missing lines	Patch %	Lines
onetl/file/format/xml.py	41.66%	4 Missing and 3 partials ⚠️
onetl/hwm/store/hwm_class_registry.py	84.61%	1 Missing and 1 partial ⚠️
.../connection/db_connection/jdbc_mixin/connection.py	95.45%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #297      +/-   ##
===========================================
+ Coverage    92.36%   92.59%   +0.22%     
===========================================
  Files          229      229              
  Lines        10247    10272      +25     
  Branches      1021     1029       +8     
===========================================
+ Hits          9465     9511      +46     
+ Misses         587      569      -18     
+ Partials       195      192       -3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.