Fix tags not deleted from edit tags screen

[Gio2018]

Goal

• In the "Edit Tags" screen accessible from the overflow menu of the Reader in a saved item, deleting a tag and tapping "Save" did not actually delete the tag. this PR fixes the bug.
• This PR also updates Sentry to 8.34.0

Test Steps

• Build/run this branch
• From either the Saves screen or the Recent Saves section on Home, select a saved item
• Tap the overflow menu, then "Edit Tags"
• Edit tags at will, and particularly delete existing ones, and make sure they are actually deleted
• Go back in the saves list, pull to refresh and make sure deleted tags do not reappear in the selected item.

Screenshots

[pocket-ci]

	Messages
📖	No SwiftLint violations! 🎉
📖	Project coverage: 37.46%
📖	Checking XCode Environment Variables
📖	Edited 13 files
📖	Created 2 files

PocketKit: Coverage: 63.07

File	Coverage
PocketAddTagsViewModel.swift	81.25%	✅

SaveToPocketKit: Coverage: 28.6

File	Coverage
SaveToAddTagsViewModel.swift	80.8%	✅

SharedPocketKit: Coverage: 62.45

File	Coverage
AddTagsView.swift	0.0%	⚠️
AddTagsViewModel.swift	72.5%	✅

Sync: Coverage: 71.78

File	Coverage
SyncTask.swift	88.89%	✅
PocketSource.swift	57.44%	✅

SaveToPocketKitTests: Coverage: 0.0

File	Coverage
SaveToAddTagsViewModel.swift	0.0%	⚠️
SaveToAddTagsViewModelTests.swift	0.0%	⚠️

SyncTests: Coverage: 22.74

File	Coverage
SyncTask.swift	88.89%	✅
PocketSource.swift	19.33%	⚠️

SharedPocketKitTests: Coverage: 28.09

File	Coverage
AddTagsView.swift	0.0%	⚠️
AddTagsViewModel.swift	0.0%	⚠️

PocketKitTests: Coverage: 28.44

File	Coverage
PocketAddTagsViewModelTests.swift	0.0%	⚠️
AddTagsView.swift	0.0%	⚠️
AddTagsViewModel.swift	0.0%	⚠️
MockSource.swift	0.0%	⚠️
PocketAddTagsViewModel.swift	0.0%	⚠️

Generated by 🚫 Danger Swift against 5b19bba

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ App Hanging: App hanging for at least 2000 ms. SavesContainerViewController View Issue

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