Bump semver from 5.7.1 to 5.7.2 in /big-dipper-backend

Bumps [semver](https://github.com/npm/node-semver) from 5.7.1 to 5.7.2.
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/v5.7.2/CHANGELOG.md)
- [Commits](npm/node-semver@v5.7.1...v5.7.2)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: indirect
...

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

big-dipper-backend/yarn.lock

@@ -4506,22 +4506,16 @@ secp256k1@^4.0.3:
     node-gyp-build "^4.2.0"
 
 semver@^5.5.0, semver@^5.5.1, semver@^5.6.0:
-  version "5.7.1"
-  resolved "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz"
+  version "5.7.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.2.tgz#48d55db737c3287cd4835e17fa13feace1c41ef8"
 
 semver@^6.0.0, semver@^6.3.0:
-  version "6.3.0"
-  resolved "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz"
-
-semver@^7.1.2:
-  version "7.3.8"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.8.tgz#07a78feafb3f7b32347d725e33de7e2a2df67798"
-  dependencies:
-    lru-cache "^6.0.0"
+  version "6.3.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.1.tgz#556d2ef8689146e46dcea4bfdd095f3434dffcb4"
 
-semver@^7.3.5:
-  version "7.3.7"
-  resolved "https://registry.npmjs.org/semver/-/semver-7.3.7.tgz"
+semver@^7.1.2, semver@^7.3.5:
+  version "7.5.4"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.5.4.tgz#483986ec4ed38e1c6c48c34894a9182dbff68a6e"
   dependencies:
     lru-cache "^6.0.0"