cli: provide prettier config

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

microsite/package.json

@@ -17,7 +17,7 @@
     "version": "docusaurus-version",
     "write-translations": "docusaurus-write-translations"
   },
-  "prettier": "@spotify/prettier-config",
+  "prettier": "@backstage/cli/config/prettier",
   "dependencies": {
     "@docusaurus/core": "^3.1.1",
     "@docusaurus/plugin-client-redirects": "^3.1.1",
@@ -38,7 +38,6 @@
   "devDependencies": {
     "@docusaurus/module-type-aliases": "^3.1.1",
     "@docusaurus/tsconfig": "^3.1.1",
-    "@spotify/prettier-config": "^15.0.0",
     "@types/luxon": "^3.0.0",
     "@types/webpack-env": "^1.18.0",
     "js-yaml": "^4.1.0",

microsite/yarn.lock

@@ -2684,15 +2684,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@spotify/prettier-config@npm:^15.0.0":
-  version: 15.0.0
-  resolution: "@spotify/prettier-config@npm:15.0.0"
-  peerDependencies:
-    prettier: 2.x
-  checksum: aa5ec5739427f9acdb9d62ae6c04f04a344898567239f7ee45c75c6205ebdffbc61747ea8de6e83baf0bc3785359967de4b7097a8723c4b4063ff57dc5cb6c44
-  languageName: node
-  linkType: hard
-
 "@svgr/babel-plugin-add-jsx-attribute@npm:8.0.0":
   version: 8.0.0
   resolution: "@svgr/babel-plugin-add-jsx-attribute@npm:8.0.0"
@@ -4008,7 +3999,6 @@ __metadata:
     "@docusaurus/tsconfig": ^3.1.1
     "@docusaurus/types": ^3.1.1
     "@mdx-js/react": ^3.0.0
-    "@spotify/prettier-config": ^15.0.0
     "@swc/core": ^1.3.46
     "@types/luxon": ^3.0.0
     "@types/webpack-env": ^1.18.0