Update dependency prettier to v2.8.8

Author: renovate[bot]

backend/package.json

@@ -61,7 +61,7 @@
     "jest": "26.6.3",
     "jest-sonar-reporter": "2.0.0",
     "nock": "13.0.11",
-    "prettier": "2.2.1",
+    "prettier": "2.8.8",
     "supertest": "6.1.3",
     "swagger-parser": "10.0.2",
     "ts-jest": "26.5.5",

backend/yarn.lock

@@ -4710,10 +4710,10 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
-prettier@2.2.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.2.1.tgz#795a1a78dd52f073da0cd42b21f9c91381923ff5"
-  integrity sha512-PqyhM2yCjg/oKkFPtTGUojv7gnZAoG80ttl45O6x2Ug/rMJw4wcc9k6aaf2hibP7BGVCCM33gZoGjyvt9mm16Q==
+prettier@2.8.8:
+  version "2.8.8"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.8.tgz#e8c5d7e98a4305ffe3de2e1fc4aca1a71c28b1da"
+  integrity sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==
 
 pretty-format@^26.0.0, pretty-format@^26.6.2:
   version "26.6.2"