Bump proj4 from 2.6.3 to 2.7.0

Bumps [proj4](https://github.com/proj4js/proj4js) from 2.6.3 to 2.7.0.
- [Release notes](https://github.com/proj4js/proj4js/releases)
- [Changelog](https://github.com/proj4js/proj4js/blob/master/changelog.md)
- [Commits](https://github.com/proj4js/proj4js/compare/2.6.3...2.7.0)

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

package-lock.json

@@ -10671,9 +10671,9 @@
       "dev": true
     },
     "proj4": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/proj4/-/proj4-2.6.3.tgz",
-      "integrity": "sha512-XRqnLmHWlvi7jqKNTqaOUrVy72JEtOUrnlLki99yZUOSvcSeBaZ1I/EGnQ2LzplSbjSrebGAdikqCLeCxC/YEg==",
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/proj4/-/proj4-2.7.0.tgz",
+      "integrity": "sha512-UVhulf8m70/dREOBrJagWq8cDYUgjQUWILRqys/gqo/+ZLeNB/04zbtPhJbz8+cCPzZNQMychfBaWUCP60U9mQ==",
       "dev": true,
       "requires": {
         "mgrs": "1.0.0",

package.json

@@ -89,7 +89,7 @@
     "mocha": "8.2.1",
     "pixelmatch": "^5.1.0",
     "pngjs": "^6.0.0",
-    "proj4": "2.6.3",
+    "proj4": "2.7.0",
     "puppeteer": "5.5.0",
     "rollup": "^2.1.0",
     "rollup-plugin-babel": "^4.3.3",