Update CHANGELOG.md for 8.17.0

[ci skip]

changelogs/unreleased/25460-replace-word-users-with-members.yml

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-title: Replace word user with member
-merge_request: 8872
-author:

changelogs/unreleased/25624-anticipate-obstacles-to-removing-turbolinks.yml

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-title: Remove turbolinks.
-merge_request: !8570
-author:

changelogs/unreleased/25811-pipeline-number-and-url-do-not-update-when-new-pipeline-is-triggered.yml

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-title: Update pipeline and commit links when CI status is updated
-merge_request: 8351
-author:

changelogs/unreleased/25910-convert-manual-action-icons-to-svg-to-propperly-position-them.yml

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-title: Convert pipeline action icons to svg to have them propperly positioned
-merge_request:
-author:

changelogs/unreleased/25989-fix-rogue-scrollbars-on-comments.yml

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-title: Remove rogue scrollbars for issue comments with inline elements
-merge_request:
-author:

changelogs/unreleased/26059-segoe-ui-vertical.yml

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-title: Align Segoe UI label text
-merge_request:
-author:

changelogs/unreleased/26068_tasklist_issue.yml

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-title: Don’t count tasks that are not defined as list items correctly
-merge_request: 8526
-author:

changelogs/unreleased/26117-sort-pipeline-for-commit.yml

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-title: Add sorting pipeline for a commit
-merge_request: 8319
-author: Takuya Noguchi

changelogs/unreleased/26186-diff-view-plus-and-minus-signs-as-part-of-line-number.yml

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-title: Color + and - signs in diffs to increase code legibility
-merge_request:
-author:

changelogs/unreleased/26445-accessible-piplelines-buttons.yml

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-title: Improve button accessibility on pipelines page
-merge_request: 8561
-author:

changelogs/unreleased/26447-fix-tab-list-order.yml

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-title: Fix tab index order on branch commits list page
-merge_request:
-author: Ryan Harris

changelogs/unreleased/26468-fix-users-sort-in-admin-area.yml

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-title: Fix Sort by Recent Sign-in in Admin Area
-merge_request: 8637
-author: Poornima M

changelogs/unreleased/26787-add-copy-icon-hover-state.yml

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-title: Add hover style to copy icon on commit page header
-merge_request:
-author: Ryan Harris

changelogs/unreleased/26824-diff-unfold-link-is-still-visible-when-there-are-no-lines-to-unfold.yml

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-title: prevent diff unfolding link from appearing when there are no more lines to
-  show
-merge_request: 8761
-author:

changelogs/unreleased/26852-fix-slug-for-openshift.yml

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-title: Avoid repeated dashes in $CI_ENVIRONMENT_SLUG
-merge_request: 8638
-author:

changelogs/unreleased/26863-Remove-hover-animation-from-row-elements.yml

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-title: Remove hover animation from row elements
-merge_request:
-author:

changelogs/unreleased/26881-backup-fails-if-data-changes.yml

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-title: Add `copy` backup strategy to combat file changed errors
-merge_request: 8728
-author:

changelogs/unreleased/26920-hover-cursor-on-pagination-element.yml

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-title: Fixes hover cursor on pipeline pagenation
-merge_request: 9003
-author:

changelogs/unreleased/26947-build-status-self-link.yml

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-title: Add link verification to badge partial in order to render a badge without a link
-merge_request: 8740
-author:

changelogs/unreleased/26982-improve-pipeline-status-icon-linking-in-widgets.yml

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-title: Improve pipeline status icon linking in widgets
-merge_request:
-author: