Update dependency mkdirp to v3 (#25142)

* Update dependency mkdirp to v3

* Iterate

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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

package.json

@@ -147,7 +147,7 @@
         "matrix-web-i18n": "^1.4.0",
         "mini-css-extract-plugin": "^1",
         "minimist": "^1.2.6",
-        "mkdirp": "^2.0.0",
+        "mkdirp": "^3.0.0",
         "modernizr": "^3.12.0",
         "node-fetch": "^2.6.7",
         "optimize-css-assets-webpack-plugin": "^6.0.0",