fix: update mmgc dep, fix blank lines in polygons

Author: seveibar

yarn.lock

@@ -10841,10 +10841,10 @@ mkdirp@0.5.1, mkdirp@0.5.x, mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.0, mkdirp@
   dependencies:
     minimist "0.0.8"
 
-mmgc1-cpp@^1.0.47:
-  version "1.0.47"
-  resolved "https://registry.yarnpkg.com/mmgc1-cpp/-/mmgc1-cpp-1.0.47.tgz#1493ac09a64e5f748fa3efe59b1094a85fb218c0"
-  integrity sha512-K9rINLVkFX/ALnwP8elsn+AUPLABXNxE/qJX1iUicmxyD1MRi7nES9dkPVkDxXtgLDWmnLDrnOSd9EIUaO2gFQ==
+mmgc1-cpp@^1.0.48:
+  version "1.0.48"
+  resolved "https://registry.yarnpkg.com/mmgc1-cpp/-/mmgc1-cpp-1.0.48.tgz#23e9678069a80f11133f6d05d1e936c54802ed41"
+  integrity sha512-woeya4QAsgp52pmGN9fmJeG1ugTv4gYQLTJDzA6i2X/CV/8BPqURIV0b+YdzeLKHoWSUqxGta4oivCT5Tm4efA==
 
 moment@^2.23.0:
   version "2.24.0"