Upgrade targetSdk from 33 to 34.

[notandyvee]

Fixes #19917

This PR updates the targetSdk from 33 to 34.

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To Test:

• Uploading images through gutenberg
• Uploading images through wordpress media
• Delete media from wordpress.com media.
• Make a post and edit a post.
• Use the reader.
• Comment on a post.
• Like a post.
• Notifications should work.
• Create a site.
• Test widgets.

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Regression Notes

1. Potential unintended areas of impact

   There should be none.

2. What I did to test those areas of impact (or what existing automated tests I relied on)

   Manual tests

3. What automated tests I added (or what prevented me from doing so)

   N/A

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PR Submission Checklist:

• I have completed the Regression Notes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21003-fb550c3
	Commit	fb550c3
	Direct Download	jetpack-prototype-build-pr21003-fb550c3.apk

Note: Google Login is not supported on these builds.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21003-fb550c3
	Commit	fb550c3
	Direct Download	wordpress-prototype-build-pr21003-fb550c3.apk

Note: Google Login is not supported on these builds.

[irfano]

Round 2 🤞🏻
LGTM!