build(deps): bump @lerna/project from 3.18.0 to 3.21.0 (#840)

Bumps [@lerna/project](https://github.com/lerna/lerna/tree/HEAD/core/project) from 3.18.0 to 3.21.0.
- [Release notes](https://github.com/lerna/lerna/releases)
- [Changelog](https://github.com/lerna/lerna/blob/master/core/project/CHANGELOG.md)
- [Commits](https://github.com/lerna/lerna/commits/v3.21.0/core/project)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

yarn.lock

@@ -2245,7 +2245,7 @@
     npmlog "^4.1.2"
     upath "^1.2.0"
 
-"@lerna/project@3.18.0", "@lerna/project@^3.18.0":
+"@lerna/project@3.18.0":
   version "3.18.0"
   resolved "https://registry.npmjs.org/@lerna/project/-/project-3.18.0.tgz#56feee01daeb42c03cbdf0ed8a2a10cbce32f670"
   integrity sha512-+LDwvdAp0BurOAWmeHE3uuticsq9hNxBI0+FMHiIai8jrygpJGahaQrBYWpwbshbQyVLeQgx3+YJdW2TbEdFWA==
@@ -2263,6 +2263,24 @@
     resolve-from "^4.0.0"
     write-json-file "^3.2.0"
 
+"@lerna/project@^3.18.0":
+  version "3.21.0"
+  resolved "https://registry.npmjs.org/@lerna/project/-/project-3.21.0.tgz#5d784d2d10c561a00f20320bcdb040997c10502d"
+  integrity sha512-xT1mrpET2BF11CY32uypV2GPtPVm6Hgtha7D81GQP9iAitk9EccrdNjYGt5UBYASl4CIDXBRxwmTTVGfrCx82A==
+  dependencies:
+    "@lerna/package" "3.16.0"
+    "@lerna/validation-error" "3.13.0"
+    cosmiconfig "^5.1.0"
+    dedent "^0.7.0"
+    dot-prop "^4.2.0"
+    glob-parent "^5.0.0"
+    globby "^9.2.0"
+    load-json-file "^5.3.0"
+    npmlog "^4.1.2"
+    p-map "^2.1.0"
+    resolve-from "^4.0.0"
+    write-json-file "^3.2.0"
+
 "@lerna/prompt@3.18.5":
   version "3.18.5"
   resolved "https://registry.npmjs.org/@lerna/prompt/-/prompt-3.18.5.tgz#628cd545f225887d060491ab95df899cfc5218a1"