chore(deps-dev): bump postcss from 7.0.36 to 8.3.7 in /frontend

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.36 to 8.3.7.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@7.0.36...8.3.7)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

frontend/package.json

@@ -48,7 +48,7 @@
     "autoprefixer": "^9",
     "craco-esbuild": "^0.4.0",
     "http-proxy-middleware": "^2.0.1",
-    "postcss": "^7",
+    "postcss": "^8",
     "react-scripts": "4.0.3",
     "tailwindcss": "npm:@tailwindcss/postcss7-compat",
     "typescript": "^4.4.3"

frontend/yarn.lock

@@ -3344,7 +3344,7 @@ color@^4.0.1:
     color-convert "^2.0.1"
     color-string "^1.6.0"
 
-colorette@^1.2.1, colorette@^1.2.2, colorette@^1.3.0:
+colorette@^1.2.1, colorette@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/colorette/-/colorette-1.3.0.tgz#ff45d2f0edb244069d3b772adeb04fed38d0a0af"
   integrity sha512-ecORCqbSFP7Wm8Y6lyqMJjexBQqXSF7SSeaTyGGphogUjBlFP9m9o08wy86HL2uB7fMTxtOUzLMk7ogKcxMg1w==
@@ -7467,7 +7467,12 @@ nan@^2.12.1:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.2.tgz#f5376400695168f4cc694ac9393d0c9585eeea19"
   integrity sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ==
 
-nanoid@^3.1.23:
+nanocolors@^0.1.5:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/nanocolors/-/nanocolors-0.1.6.tgz#bc2350d3edfdbfadd7ac018c855ae7c13905a6ad"
+  integrity sha512-2pvTw6vYRaBLGir2xR7MxaJtyWkrn+C53EpW8yPotG+pdAwBvt0Xwk4VJ6VHLY0aLthVZPvDfm9TdZvrvAm5UQ==
+
+nanoid@^3.1.25:
   version "3.1.25"
   resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.25.tgz#09ca32747c0e543f0e1814b7d3793477f9c8e152"
   integrity sha512-rdwtIXaXCLFAQbnfqDRnI6jaRHp9fTcYBjtFKE8eezcZ7LuLjhUaQGNeMXf1HmRoCH32CLz6XwX0TtxEOS/A3Q==
@@ -8906,13 +8911,13 @@ postcss@^7, postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.17, po
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postcss@^8.1.0, postcss@^8.2.1:
-  version "8.3.6"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.3.6.tgz#2730dd76a97969f37f53b9a6096197be311cc4ea"
-  integrity sha512-wG1cc/JhRgdqB6WHEuyLTedf3KIRuD0hG6ldkFEZNCjRxiC+3i6kkWUUbiJQayP28iwG35cEmAbe98585BYV0A==
+postcss@^8, postcss@^8.1.0, postcss@^8.2.1:
+  version "8.3.7"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.3.7.tgz#ec88563588c8da8e58e7226f7633b51ae221eeda"
+  integrity sha512-9SaY7nnyQ63/WittqZYAvkkYPyKxchMKH71UDzeTmWuLSvxTRpeEeABZAzlCi55cuGcoFyoV/amX2BdsafQidQ==
   dependencies:
-    colorette "^1.2.2"
-    nanoid "^3.1.23"
+    nanocolors "^0.1.5"
+    nanoid "^3.1.25"
     source-map-js "^0.6.2"
 
 prelude-ls@^1.2.1: