fix: allow social preview images (#934)

* feat(ogtags): when encountering opengraph URLs, add them to an allow cache

Signed-off-by: Xe Iaso <me@xeiaso.net>

* feat(lib): automatically allow any urls in the ogtags allow cache

Signed-off-by: Xe Iaso <me@xeiaso.net>

* docs: update CHANGELOG

Signed-off-by: Xe Iaso <me@xeiaso.net>

* chore: spelling

Signed-off-by: Xe Iaso <me@xeiaso.net>

* docs(changelog): remove this bit to make it its own PR

Signed-off-by: Xe Iaso <me@xeiaso.net>

* test(palemoon): add 180 second timeout

Signed-off-by: Xe Iaso <me@xeiaso.net>

* test(palemoon): actually invoke timeout

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Xe Iaso <me@xeiaso.net>

docs/docs/CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [Custom-AsyncHttpClient](https://github.com/AsyncHttpClient/async-http-client)'s default User-Agent has an increased weight by default ([#852](https://github.com/TecharoHQ/anubis/issues/852)).
 - The [`segments`](./admin/configuration/expressions.mdx#segments) function was added for splitting a path into its slash-separated segments.
 - When issuing a challenge, Anubis stores information about that challenge into the store. That stored information is later used to validate challenge responses. This works around nondeterminism in bot rules. ([#917](https://github.com/TecharoHQ/anubis/issues/917))
+- When parsing [Open Graph tags](./admin/configuration/open-graph.mdx), add any URLs found in the responses to a temporary "allow cache" so that social preview images work.
 
 ## v1.21.3: Minfilia Warde - Echo 3