fix(deps): update dependency @types/webpack-env to v1.18.8

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

Author: renovate[bot]

microsite/yarn.lock

@@ -3129,9 +3129,9 @@ __metadata:
   linkType: hard
 
 "@types/webpack-env@npm:^1.18.0":
-  version: 1.18.1
-  resolution: "@types/webpack-env@npm:1.18.1"
-  checksum: 3173c069763e51a96565d602af7e6dac9d772ae4aa6f26cac187cbf599a7f0b88f790b4b050b9dbdb0485daed3061b4a337863f3b8ce66f8a4e51f75ad387c6a
+  version: 1.18.8
+  resolution: "@types/webpack-env@npm:1.18.8"
+  checksum: f6a13276e23c6573ee2a7c7ae7b0705a9cd982c3a31197ba6fa6f3d3bd6fd921194a67c960249b1554ef4c70b6736a3437284a01f659f145fe2b56c3196a7908
   languageName: node
   linkType: hard