fix(deps): update dependency source-map to v0.7.6

Author: renovate[bot]

package-lock.json

@@ -33,7 +33,7 @@
     "node-esapi": "0.0.1",
     "numeral": "2.0.6",
     "rehype-parse": "7.0.1",
-    "source-map": "0.7.4",
+    "source-map": "0.7.6",
     "unified": "9.2.2",
     "unist-util-inspect": "6.0.1",
     "xregexp": "5.1.2"