build(deps): bump swagger-spec-validator from 2.7.2 to 2.7.3 (#100)

Bumps [swagger-spec-validator](https://github.com/Yelp/swagger_spec_validator) from 2.7.2 to 2.7.3.
- [Release notes](https://github.com/Yelp/swagger_spec_validator/releases)
- [Changelog](https://github.com/Yelp/swagger_spec_validator/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/Yelp/swagger_spec_validator/compare/v2.7.2...v2.7.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Pipfile.lock

@@ -781,11 +781,11 @@
         },
         "swagger-spec-validator": {
             "hashes": [
-                "sha256:b651f881d718b0e3e867f19151bb47f7a50da611f285262f4d4aea092998347c",
+                "sha256:d1514ec7e3c058c701f27cc74f85ceb876d6418c9db57786b9c54085ed5e29eb",
-                "sha256:cb8a140c9c5d7d061d465416f156f432a92aa1a812b9c04f44e66c1568f13811"
+                "sha256:f4f23ee4dbd52bfcde90b1144dde22304add6260e9f29252e9fd7814c9b8fd16"
             ],
             "index": "pypi",
-            "version": "==2.7.2"
+            "version": "==2.7.3"
         },
         "uritemplate": {
             "hashes": [