impr(quotes): add english quotes (@jay-tau) (#6515)

### Description

<!-- Please describe the change(s) made in your PR -->

### Checks

- [x] 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!
- [ ] Check if any open issues are related to this PR; if so, be sure to
tag them below.
- [ ] Make sure the PR title follows the Conventional Commits standard.
(https://www.conventionalcommits.org for more info)
- [ ] Make sure to include your GitHub username prefixed with @ inside
parentheses at the end of the PR title.

<!-- label(optional scope): pull request title (@your_github_username)
-->

<!-- I know I know they seem boring but please do them, they help us and
you will find out it also helps you.-->

Closes #

<!-- the issue(s) your PR resolves if any (delete if that is not the
case) -->
<!-- please also reference any issues and or PRs related to your pull
request -->
<!-- Also remove it if you are not following any issues. -->

<!-- pro tip: you can mention an issue, PR, or discussion on GitHub by
referencing its hash number e.g:
[#1234](https://github.com/monkeytypegame/monkeytype/pull/1234) -->

<!-- pro tip: you can press . (dot or period) in the code tab of any
GitHub repo to get access to GitHub's VS Code web editor Enjoy! :) -->

---------

Co-authored-by: Lavanya Ananthan <lavanya.ananthan.763@gmail.com>

frontend/static/quotes/english.json

@@ -38589,6 +38589,18 @@
       "source": "The Eleventh Doctor - Doctor Who",
       "length": 311,
       "id": 7644
+    },
+    {
+      "text": "'Cause you never think the last time's going to be the last time - you think there will be more. You think you have forever, but you don't.",
+      "source": "Dr. Meredith Grey - Grey's Anatomy",
+      "length": 139,
+      "id": 7645
+    },
+    {
+      "text": "With freedom, flowers, books, and the moon, who could not be perfectly happy?",
+      "source": "De Profundis",
+      "length": 77,
+      "id": 7646
     }
   ]
 }