Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `README.md`:
  Upstream README has been changed, but we have a completely different one.
  Kept our `README.md`.
- `lib/sanitize_ext/sanitize_config.rb`:
  Upstream added support for more incoming HTML tags (a large subset of what
  glitch-soc accepts).
  Change the code style to match upstream's but otherwise do not change our
  code.
- `spec/lib/sanitize_config_spec.rb`:
  Upstream added support for more incoming HTML tags (a large subset of what
  glitch-soc accepts).
  Kept our version, since the tests are mostly glitch-soc's, except for cases
  which are purposefuly different.

Gemfile.lock

@@ -144,7 +144,7 @@ GEM
     bootsnap (1.16.0)
       msgpack (~> 1.2)
     brakeman (5.4.0)
-    browser (4.2.0)
+    browser (5.3.1)
     brpoplpush-redis_script (0.1.3)
       concurrent-ruby (~> 1.0, >= 1.0.5)
       redis (>= 1.0, < 6)
@@ -155,7 +155,6 @@ GEM
     bundler-audit (0.9.1)
       bundler (>= 1.2.0, < 3)
       thor (~> 1.0)
-    byebug (11.1.3)
     capistrano (3.17.2)
       airbrussh (>= 1.0.0)
       i18n
@@ -499,14 +498,6 @@ GEM
       net-smtp
       premailer (~> 1.7, >= 1.7.9)
     private_address_check (0.5.0)
-    pry (0.14.1)
-      coderay (~> 1.1)
-      method_source (~> 1.0)
-    pry-byebug (3.10.1)
-      byebug (~> 11.0)
-      pry (>= 0.13, < 0.15)
-    pry-rails (0.3.9)
-      pry (>= 0.10.4)
     public_suffix (5.0.1)
     puma (6.1.0)
       nio4r (~> 2.0)
@@ -569,7 +560,7 @@ GEM
     rdf-normalize (0.5.1)
       rdf (~> 3.2)
     redcarpet (3.6.0)
-    redis (4.5.1)
+    redis (4.8.1)
     redis-namespace (1.10.0)
       redis (>= 4)
     redlock (1.3.2)
@@ -794,7 +785,6 @@ DEPENDENCIES
   capybara (~> 3.38)
   charlock_holmes (~> 0.7.7)
   chewy (~> 7.2)
-  climate_control (~> 0.2)
   cocoon (~> 1.2)
   color_diff (~> 0.1)
   concurrent-ruby
@@ -853,8 +843,6 @@ DEPENDENCIES
   posix-spawn
   premailer-rails
   private_address_check (~> 0.5)
-  pry-byebug (~> 3.10)
-  pry-rails (~> 0.3)
   public_suffix (~> 5.0)
   puma (~> 6.1)
   pundit (~> 2.3)