Included original exception when failed to write to local log file

[normj]

Issue #, if available:
#329

Description of changes:
When there is a misconfiguration or connection issue sending request to CloudWatch Logs the library will write to a local log file to allow users to understand something went wrong with the exception of what happen. If you are in Lambda or some other read only file system the library then fails to write to the local file. Before this patch it would write to the console the exception for why it couldn't write to the local file. This PR adds to the console write to also include the original exception that triggered the need to ever write to the local log file.

I also updated to latest AWS SDK for .NET versions.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[GarrettBeatty]

should target dev branch

[Copilot]

Pull Request Overview

This PR improves error handling when the AWS logging library fails to write to a local log file by including the original exception in the console output. Additionally, it updates AWS SDK dependencies to their latest versions.

• Enhanced error reporting to include the original exception when local file logging fails
• Updated AWS SDK dependencies (CloudWatchLogs, SecurityToken, Core) to newer versions
• Replaced deprecated User-Agent header manipulation with proper SDK API usage

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/AWS.Logger.Core/Core/AWSLoggerCore.cs	Enhanced exception handling and updated User-Agent implementation
src/AWS.Logger.Core/AWS.Logger.Core.csproj	Updated AWSSDK.CloudWatchLogs to version 4.0.8.4
Multiple test project files	Updated AWSSDK.SecurityToken to version 4.0.2.6
Sample project files	Updated AWSSDK.Core to version 4.0.0.32
.autover/changes/*.json	Added changelog entries for the patch release

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[Copilot]

Corrected changelog message to remove extra 'AWS' prefix in version description.

Suggested change

	"Updated AWSSDK.CloudWatchLogs dependency to version AWS 4.0.8.4"
	"Updated AWSSDK.CloudWatchLogs dependency to version 4.0.8.4"

[GarrettBeatty]

typo here

[normj]

Fixed

[normj]

should target dev branch

Done, although I picked up a commit in main that wasn't synced with dev. I figure when I merge I won't do a squash merge to keep the commit as is when going into dev.