impr(quotes): add english quotes (@scarcekoi) (monkeytypegame#6429)

### Description

I added 4 quotes from Doctor Who. (There are a few unnecessary commits
that were just updating my fork.)

### Checks

- [ ] Adding quotes?
- [ ] Make sure to include translations for the quotes in the
description (or another comment) so we can verify their content.
- [ ] Adding a language or a theme?
- [ ] If is a language, did you edit `_list.json`, `_groups.json` and
add `languages.json`?
  - [ ] If is a theme, did you add the theme.css?
- Also please add a screenshot of the theme, it would be extra awesome
if you do so!
- [x] Check if any open issues are related to this PR; if so, be sure to
tag them below.
- [x] Make sure the PR title follows the Conventional Commits standard.
(https://www.conventionalcommits.org for more info)
- [x] Make sure to include your GitHub username prefixed with @ inside
parentheses at the end of the PR title.

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Author: scarcekoi

frontend/static/quotes/english.json

@@ -38562,9 +38562,33 @@
     },
     {
       "text": "If this universe has taught me anything, it's that you should always hold onto every moment you can, every hour, every minute, every second. Even when all hope is gone, you should still cling on, because you can never know what fresh hope the future may bring.",
-      "source": "The Eleventh Doctor",
+      "source": "The Eleventh Doctor - Doctor Who",
       "length": 260,
       "id": 7640
+    },
+    {
+      "text": "You’re right. Could be extremely dangerous. Unconscionably dangerous. So dangerous I haven’t thought of a word for it yet. I’d better go first!",
+      "source": "The Eleventh Doctor - Doctor Who",
+      "length": 143,
+      "id": 7641
+    },
+    {
+      "text": "A bottle? Floating in the middle of deep space. It's a milk bottle. Right. Well, I've clearly got a very determined milkman!",
+      "source": "The Tenth Doctor - Doctor Who",
+      "length": 124,
+      "id": 7642
+    },
+    {
+      "text": "Life moves forward. No matter how much it hurts. It has to.",
+      "source": "The Eleventh Doctor - Doctor Who",
+      "length": 59,
+      "id": 7643
+    },
+    {
+      "text": "We all change, when you think about it. We're all different people all through our lives. And that's okay, that's good, you've got to keep moving, so long as you remember all the people that you used to be. I will not forget one line of this. Not one day. I swear. I will always remember when the Doctor was me.",
+      "source": "The Eleventh Doctor - Doctor Who",
+      "length": 311,
+      "id": 7644
     }
   ]
 }