* Changelog: 6.4.3 release

Co-Authored-By: Marcus Efraimsson <marcus.efraimsson@gmail.com>

* Unsubscribe on unmount

* Fix unsubscribe

* build: update scripts go.(mod|sum)

* build: exclude gosec rule G108

Gosec rule G108: Profiling endpoint automatically exposed on /debug/pprof
is not applicable since we only enable /debug/pprof endpoint if -profile
flag is provided when starting grafana.

Fixes so that all notification channels configured for an alert should 
try to send notification even if one notification channel fails to send
a notification.

Signed-off-by: Abhilash Gnan <abhilashgnan@gmail.com>

Fixes #19768

* pkg/middleware: Check errors
* pkg/middleware: Log when gzip middleware handler fails

* pkg/cmd: Check errors
* pkg/cmd: Make sure server waits on services, even in case of error
* pkg/cmd: Inform of error to show help
* pkg/cmd: Only warn on failure to send systemd notification
* pkg/cmd: Don't log errors stemming from context cancelation
* pkg/cmd: Don't fail if unable to write to systemd

* add file loader for fonts

* Add public path to resolve fonts correctly

* Do not specify font's output path

* Output fonts to fonts directory

* WIP: simple poc of allow custom value for selects

* Add support for custom value in segment

* Update snapshots

* Fix data links menu being hidden in siglestat-ish visualizations

* ts fix

* Review updates

It is now possible to specify a field containing time-end in 
Elasticsearch annotations.
Any annotations with a time-end will become a region between 
time and time-end. Any annotations without the time-end field 
will remain a single-point annotation.

Ref #10589

* Docs: Add additional capitalization rules

What this PR does / why we need it:

This updates the Documentation style guide to include more details on the capitalization rules. Capitalization rules get confused easily, especially between terms like Dashboards (menu title) and dashboards (plural).

Which issue(s) this PR fixes:

No fix, just an addition.

* Revert "Docs: Add additional capitalization rules"

This reverts commit 75cbc6303c9f77997b5fd8d26e48802e8e7a859e.

* Docs: Docs: Add additional capitalization rules

Resolves #19810

With the recent release of IAM roles for service accounts 
the AWS sdk needs to be updated to at least 1.23.13 in 
order to utilize this feature.

Allows the d-solo route to be used with UID and without 
a slug.

Fixes #11617

* pkg/bus: Check errors
* pkg/bus: Convert tests to testify

Fixes #19762

* Rename GrafanaServerImpl to Server

* Make flag dependencies explicit

* Extract method for building service graph

* Document and clarify methods

* Rename HttpServer to HTTPServer

* Types: Add type safety to appEvents

* Update README.md

Minor grammar and format edits

* Update README.md

* Link to architecture docs from Developer guide

* Fix link

it is actually an intended feature by tslint:
https://github.com/palantir/tslint/issues/4528

So adding 1 to the line number here in the plugin

* pkg/plugins: Check errors