Bump proj4 from 2.7.2 to 2.7.4

Bumps [proj4](https://github.com/proj4js/proj4js) from 2.7.2 to 2.7.4.
- [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/2.7.2...2.7.4)

---
updated-dependencies:
- dependency-name: proj4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -95,7 +95,7 @@
     "mocha": "9.0.0",
     "pixelmatch": "^5.1.0",
     "pngjs": "^6.0.0",
-    "proj4": "2.7.2",
+    "proj4": "2.7.4",
     "puppeteer": "10.0.0",
     "rollup": "^2.42.3",
     "rollup-plugin-terser": "^7.0.2",