fix: consistent etags + use expires header on signed urls

[fenos]

What kind of change does this PR introduce?

Bug fix

What is the current behavior?

• etags were out of sync with S3 during copy and move operations
• signed URL is using cache-control header instead of expires which means that the CDN cache doesn't honor the JWT expiry date

What is the new behavior?

• etags are now in sync with s3 during copy and move operations
• signed URL now returns the expires header with the date set as the JWT expiry date

[coveralls]

Pull Request Test Coverage Report for Build 3603007044

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 48 of 50 (96.0%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.06%) to 86.672%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/storage/renderer/renderer.ts	31	33	93.94%

Totals
Change from base Build 3599751846:	0.06%
Covered Lines:	4866
Relevant Lines:	5592

---

💛 - Coveralls

[github-actions]

🎉 This PR is included in version 0.25.2 🎉

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