Update CHANGELOG for 8.47.0

[ci skip]

CHANGELOG

 # Changelog for gitlab-workhorse
 
+## v8.47.0
+
+### Added
+- Add logging for local LSIF ZIP caching
+  https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/579
+- Add project level route for Generic Packages uploads
+  https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/596
+
+### Changed
+- Further simplify remote/local upload code
+  https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/602
+- Experimental: Use strict content checks when resizing images
+  https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/564
+
+### Fixed
+- Increase LSIF scanner buffer
+  https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/609
+- Fix correlation IDs not being propagated in preauth check
+  https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/607
+
+### Other
+- Reflect the actual duration of bootstrapping GitLab
+  https://gitlab.com/gitlab-org/gitlab-workhorse/-/merge_requests/605
+  Contributed by Takuya Noguchi
+
 ## v8.46.0
 
 ### Added

changelogs/unreleased/gdk-bootstrapping-takes-more-time.yml

----
-title: Reflect the actual duration of bootstrapping GitLab
-merge_request: 605
-author: Takuya Noguchi
-type: other

changelogs/unreleased/generic-packages.yml

----
-title: Add project level route for Generic Packages uploads
-merge_request: 596
-author:
-type: added

changelogs/unreleased/id-increase-lsif-scanner-buffer.yml

----
-title: Increase LSIF scanner buffer
-merge_request: 609
-author:
-type: fixed

changelogs/unreleased/jv-log-lsif-zip-cache.yml

----
-title: Add logging for local LSIF ZIP caching
-merge_request: 579
-author:
-type: added

changelogs/unreleased/jv-simplify-upload-local-remote.yml

----
-title: Further simplify remote/local upload code
-merge_request: 602
-author:
-type: changed

changelogs/unreleased/mk-strict-filetype-check.yml

----
-title: 'Experimental: Use strict content checks when resizing images'
-merge_request: 564
-author:
-type: changed

changelogs/unreleased/sh-fix-correlation-id-for-preauth.yml

----
-title: Fix correlation IDs not being propagated in preauth check
-merge_request: 607
-author:
-type: fixed