Bump broccoli-persistent-filter from 3.1.0 to 3.1.1

Bumps [broccoli-persistent-filter](https://github.com/stefanpenner/broccoli-persistent-filter) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/stefanpenner/broccoli-persistent-filter/releases)
- [Changelog](https://github.com/broccolijs/broccoli-persistent-filter/blob/master/CHANGELOG.md)
- [Commits](broccolijs/broccoli-persistent-filter@v3.1.0...v3.1.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -35,7 +35,7 @@
     "@ember/edition-utils": "^1.2.0",
     "babel-plugin-htmlbars-inline-precompile": "^4.2.0",
     "broccoli-debug": "^0.6.5",
-    "broccoli-persistent-filter": "^3.1.0",
+    "broccoli-persistent-filter": "^3.1.1",
     "broccoli-plugin": "^4.0.3",
     "common-tags": "^1.8.0",
     "ember-cli-babel-plugin-helpers": "^1.1.0",

yarn.lock

@@ -2880,10 +2880,10 @@ broccoli-persistent-filter@^2.2.1, broccoli-persistent-filter@^2.3.0:
     sync-disk-cache "^1.3.3"
     walk-sync "^1.0.0"
 
-broccoli-persistent-filter@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/broccoli-persistent-filter/-/broccoli-persistent-filter-3.1.0.tgz#5812abbc000b2409ef40addeeed16a2a9482696e"
-  integrity sha512-yHHPv7M04qb9ajo3QkbGWetpshekVYG8sSjNdgAPQQ3spiRvS6RthYBddni5iw9b2DidSCpe/YPGRnp7LL4OIQ==
+broccoli-persistent-filter@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/broccoli-persistent-filter/-/broccoli-persistent-filter-3.1.1.tgz#318c68a82d5759582bb60e7e2c0f3ca008176224"
+  integrity sha512-gP797MF87JjkcwhGBkE0fhF3aIbGnOF3K3A0iZpQSxtpmSNt+rbNzuqDOmgiKwWpx6v0+APkM5HUA0NiIZpgsQ==
   dependencies:
     async-disk-cache "^2.0.0"
     async-promise-queue "^1.0.3"
@@ -2892,7 +2892,6 @@ broccoli-persistent-filter@^3.1.0:
     hash-for-dep "^1.5.0"
     heimdalljs "^0.2.1"
     heimdalljs-logger "^0.1.7"
-    mkdirp "^0.5.1"
     promise-map-series "^0.2.1"
     rimraf "^3.0.0"
     symlink-or-copy "^1.0.1"