feat: Improve authentication error logging and retry handling

[KaviarasuSakthivadivel]

Enhanced error logging and retry logic for authentication failures to provide better visibility into transient server errors and improve resilience against flaky authentication endpoints.

Changes:

• Enhanced AuthorizationException.getMessage() to include HTTP status code and error description in a structured format
• Added AuthorizationException.isRetriable() method to identify transient errors that should be retried:
  • All 5xx server errors (500, 502, 503, 504, etc.)
  • 400 errors with retry hints ("retry your request", "unknown_error")
  • 429 rate limit errors
• Updated FormCommand to handle 5xx errors as AuthorizationException instead of IOException for consistent retry handling
• Modified retry policy in DataCloudTokenProvider to retry retriable AuthorizationExceptions while failing fast on permanent auth errors
• Added comprehensive retry logging:
  • WARN logs on each retry attempt with attempt number and error details
  • ERROR logs when all retries are exhausted
• Improved error logging in getWithRetry() to extract and log full error details including HTTP codes and error descriptions

This improves debugging of authentication issues and makes the driver more resilient to transient server-side failures commonly seen in test environments.

[codecov]

Codecov Report

❌ Patch coverage is 73.52941% with 27 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.23%. Comparing base (b8c5eb9) to head (2866da5).

Files with missing lines	Patch %	Lines
...ce/datacloud/jdbc/auth/DataCloudTokenProvider.java	67.92%	12 Missing and 5 partials ⚠️
...cloud/jdbc/auth/errors/AuthorizationException.java	74.07%	0 Missing and 7 partials ⚠️
...om/salesforce/datacloud/jdbc/http/FormCommand.java	86.36%	1 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (73.52%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #140      +/-   ##
============================================
- Coverage     83.47%   83.23%   -0.25%     
- Complexity     1271     1289      +18     
============================================
  Files           104      105       +1     
  Lines          3765     3859      +94     
  Branches        375      396      +21     
============================================
+ Hits           3143     3212      +69     
- Misses          462      475      +13     
- Partials        160      172      +12     

Components	Coverage Δ
JDBC Core	85.55% <ø> (ø)
JDBC Main	40.69% <ø> (ø)
JDBC HTTP	87.60% <73.52%> (-3.50%)	⬇️
JDBC Utilities	60.97% <ø> (ø)
Spark Datasource	∅ <ø> (∅)

Files with missing lines	Coverage Δ
...om/salesforce/datacloud/jdbc/http/FormCommand.java	86.88% <86.36%> (-1.49%)	⬇️
...cloud/jdbc/auth/errors/AuthorizationException.java	74.07% <74.07%> (ø)
...ce/datacloud/jdbc/auth/DataCloudTokenProvider.java	81.63% <67.92%> (-6.13%)	⬇️

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