Merge branch 'audit-mix-audit-report' (#69) into release/2.11

# Conflicts:
#	lib/pleroma/http/adapter_helper/hackney.ex

docs/configuration/cheatsheet.md

@@ -541,6 +541,15 @@ Available caches:
 
 ## HTTP client
 
+Pleroma uses [Gun](https://github.com/ninenines/gun) for outgoing HTTP requests. To use Hackney instead:
+
+```elixir
+config :tesla, adapter: Tesla.Adapter.Hackney
+```
+
+!!! note
+    With Hackney, size limits for fetched responses (for example for link previews) are checked only after Hackney has read the whole response. They limit what Pleroma keeps, not how much it downloads or holds in memory. Gun stops reading at the limit.
+
 ### :http
 
 * `proxy_url`: an upstream proxy to fetch posts and/or media with, (default: `nil`)
@@ -550,6 +559,8 @@ Available caches:
 
 ### :hackney_pools
 
+*For `hackney` adapter*
+
 Advanced. Tweaks Hackney (http client) connections pools.
 
 There's three pools used:

docs/installation/debian_based_jp.md

@@ -14,7 +14,7 @@ Note: This article is potentially outdated because at this time we may not have
 
 - PostgreSQL 11.0以上 (Ubuntu16.04では9.5しか提供されていないので，[](https://www.postgresql.org/download/linux/ubuntu/)こちらから新しいバージョンを入手してください)
 - `postgresql-contrib` 11.0以上 (同上)
-- Elixir 1.15 以上 ([Debianのリポジトリからインストールしないこと！！！ ここからインストールすること！](https://elixir-lang.org/install.html#unix-and-unix-like)。または [asdf](https://github.com/asdf-vm/asdf) をpleromaユーザーでインストールしてください)
+- Elixir 1.17 以上 (Erlang/OTP 27 以上) ([Debianのリポジトリからインストールしないこと！！！ ここからインストールすること！](https://elixir-lang.org/install.html#unix-and-unix-like)。または [asdf](https://github.com/asdf-vm/asdf) をpleromaユーザーでインストールしてください)
 - `erlang-dev`
 - `erlang-nox`
 - `git`

docs/installation/erlang_elixir_requirements.include

@@ -1,2 +1,2 @@
-* Elixir >=1.15.0, <1.20
-* Erlang OTP >=24.0.0 (supported: <29)
+* Elixir >=1.17.0, <1.20
+* Erlang OTP >=27.0.0 (supported: <29)

docs/installation/migrating_from_rebased.md

@@ -46,7 +46,7 @@ present, `uploads`, and `instance`. Diff and restore any other non-stock
 configuration files, preserve their ownership, and review them before starting
 Pleroma.
 
-Pleroma requires Elixir 1.15 or newer. Install supported Erlang and Elixir
+Pleroma requires Elixir 1.17 or newer and Erlang/OTP 27 or newer. Install supported Erlang and Elixir
 versions as described in the installation guide for your distribution before
 running any Mix command. Do not reuse Rebased's `.tool-versions`. If you keep
 using [`asdf`](https://asdf-vm.com/), select supported versions in the