fix(amazonq): Increase region profiles cache expiration to 1 hour

[tsmithsz]

Problem

The Amazon Q plugin experiences slow startup times due to frequent API calls to fetch region profiles. The current cache expiration of 60 seconds causes unnecessary network requests, as region profiles rarely change.

Solution

Increased the region profiles cache expiration from 60 seconds to 1 hour (3600000ms) in RegionProfileManager.

---

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.
• License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
  • Confirm whether tests should be added or ensure the PR description explains why tests are not required.
• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.

[tsmithsz]

/retrybuilds