chore(deps): update dependency nx to v15 (#1357)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

clients/algoliasearch-client-javascript/package.json

@@ -29,7 +29,7 @@
     "bundlesize2": "0.0.31",
     "execa": "5.1.1",
     "lerna": "5.5.2",
-    "nx": "14.7.5",
+    "nx": "15.8.1",
     "rollup": "2.79.1",
     "rollup-plugin-node-globals": "1.4.0",
     "rollup-plugin-terser": "7.0.2",