Bump convert-source-map from 1.9.0 to 2.0.0 (#50)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -30,7 +30,7 @@
   "homepage": "https://github.com/browserify/common-shakeify#readme",
   "dependencies": {
     "@goto-bus-stop/common-shake": "^2.3.0",
-    "convert-source-map": "^1.5.1",
+    "convert-source-map": "^2.0.0",
     "through2": "^2.0.3",
     "transform-ast": "^2.4.3",
     "wrap-comment": "^1.0.1"