Bump @babel/traverse from 7.21.4 to 7.23.9 in /backend (#95)

Bumps [@babel/traverse](https://github.com/babel/babel/tree/HEAD/packages/babel-traverse) from 7.21.4 to 7.23.9.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.23.9/packages/babel-traverse)

---
updated-dependencies:
- dependency-name: "@babel/traverse"
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Vasilis Danias <[email protected]>

backend/yarn.lock

@@ -896,14 +896,6 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-environment-visitor/-/helper-environment-visitor-7.22.20.tgz#96159db61d34a29dba454c959f5ae4a649ba9167"
   integrity sha512-zfedSIzFhat/gFhWfHtgWvlec0nqB9YEIVrpuwjruLlXfUSnA8cJB0miHKwqDnQ7d32aKo2xt88/xZptwxbfhA==
 
-"@babel/helper-function-name@^7.21.0":
-  version "7.21.0"
-  resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.21.0.tgz#d552829b10ea9f120969304023cd0645fa00b1b4"
-  integrity sha512-HfK1aMRanKHpxemaY2gqBmL04iAPOPRj7DxtNbiDOrJK+gdwkiNRVpCpUJYbUT+aZyemKN8brqTOxzCaG6ExRg==
-  dependencies:
-    "@babel/template" "^7.20.7"
-    "@babel/types" "^7.21.0"
-
 "@babel/helper-function-name@^7.23.0":
   version "7.23.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.23.0.tgz#1f9a3cdbd5b2698a670c30d2735f9af95ed52759"
@@ -912,13 +904,6 @@
     "@babel/template" "^7.22.15"
     "@babel/types" "^7.23.0"
 
-"@babel/helper-hoist-variables@^7.18.6":
-  version "7.18.6"
-  resolved "https://registry.yarnpkg.com/@babel/helper-hoist-variables/-/helper-hoist-variables-7.18.6.tgz#d4d2c8fb4baeaa5c68b99cc8245c56554f926678"
-  integrity sha512-UlJQPkFqFULIcyW5sbzgbkxn2FKRgwWiRexcuaR8RNJRy8+LLveqPjwZV/bwrLZCN0eUHD/x8D0heK1ozuoo6Q==
-  dependencies:
-    "@babel/types" "^7.18.6"
-
 "@babel/helper-hoist-variables@^7.22.5":
   version "7.22.5"
   resolved "https://registry.yarnpkg.com/@babel/helper-hoist-variables/-/helper-hoist-variables-7.22.5.tgz#c01a007dac05c085914e8fb652b339db50d823bb"
@@ -1181,23 +1166,7 @@
     "@babel/parser" "^7.23.9"
     "@babel/types" "^7.23.9"
 
-"@babel/traverse@^7.21.0", "@babel/traverse@^7.21.2", "@babel/traverse@^7.21.4":
-  version "7.21.4"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.21.4.tgz#a836aca7b116634e97a6ed99976236b3282c9d36"
-  integrity sha512-eyKrRHKdyZxqDm+fV1iqL9UAHMoIg0nDaGqfIOd8rKH17m5snv7Gn4qgjBoFfLz9APvjFU/ICT00NVCv1Epp8Q==
-  dependencies:
-    "@babel/code-frame" "^7.21.4"
-    "@babel/generator" "^7.21.4"
-    "@babel/helper-environment-visitor" "^7.18.9"
-    "@babel/helper-function-name" "^7.21.0"
-    "@babel/helper-hoist-variables" "^7.18.6"
-    "@babel/helper-split-export-declaration" "^7.18.6"
-    "@babel/parser" "^7.21.4"
-    "@babel/types" "^7.21.4"
-    debug "^4.1.0"
-    globals "^11.1.0"
-
-"@babel/traverse@^7.23.9":
+"@babel/traverse@^7.21.0", "@babel/traverse@^7.21.2", "@babel/traverse@^7.21.4", "@babel/traverse@^7.23.9":
   version "7.23.9"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.23.9.tgz#2f9d6aead6b564669394c5ce0f9302bb65b9d950"
   integrity sha512-I/4UJ9vs90OkBtY6iiiTORVMyIhJ4kAVmsKo9KFc8UOxMeUfi2hvtIBsET5u9GizXE6/GFSuKCTNfgCswuEjRg==