diff --git a/packages/tests/package-lock.json b/packages/tests/package-lock.json
index a37298f47..ec40f74e4 100644
--- a/packages/tests/package-lock.json
+++ b/packages/tests/package-lock.json
@@ -24,12 +24,36 @@
 			"integrity": "sha512-IxzUe6YzaORzUksafHAXHprV29YncOJgr0+1zNAifl0/f+cb5iAd4IWUrnsnVFHG5UGTLjvis5RgV6vvIZPDrA==",
 			"dev": true
 		},
+		"@webcomponents/custom-elements": {
+			"version": "1.5.0",
+			"resolved": "https://registry.npmjs.org/@webcomponents/custom-elements/-/custom-elements-1.5.0.tgz",
+			"integrity": "sha512-c+7jPQCs9h/BYVcZ2Kna/3tsl3A/9EyXfvWjp5RiTDm1OpTcbZaCa1z4RNcTe/hUtXaqn64JjNW1yrWT+rZ8gg==",
+			"dev": true
+		},
+		"@webcomponents/html-imports": {
+			"version": "1.3.0",
+			"resolved": "https://registry.npmjs.org/@webcomponents/html-imports/-/html-imports-1.3.0.tgz",
+			"integrity": "sha512-hKL4b5myliQZD07PBoQVO+aRJedOeAnxJQ82YgKhS2d/UNglDeV8JFA37g42qhz5QAalPjOHeFPD9PJtalcCzQ==",
+			"dev": true
+		},
 		"@webcomponents/shadycss": {
 			"version": "1.9.6",
 			"resolved": "https://registry.npmjs.org/@webcomponents/shadycss/-/shadycss-1.9.6.tgz",
 			"integrity": "sha512-5fFjvP0jQJZoXK6YzYeYcIDGJ5oEsdjr1L9VaYLw5yxNd4aRz4srMpwCwldeNG0A6Hvr9igbG7fCsBeiiCXd7A==",
 			"dev": true
 		},
+		"@webcomponents/shadydom": {
+			"version": "1.9.0",
+			"resolved": "https://registry.npmjs.org/@webcomponents/shadydom/-/shadydom-1.9.0.tgz",
+			"integrity": "sha512-1VoziSoBBsuGM3gk2nlOgLYOQLT9iG5s9ud6CxpdkYxJyGl3YWIVCsRPCXpJpdYp4/8ACkVcuD6GajRtIoJm1w==",
+			"dev": true
+		},
+		"@webcomponents/template": {
+			"version": "1.5.0",
+			"resolved": "https://registry.npmjs.org/@webcomponents/template/-/template-1.5.0.tgz",
+			"integrity": "sha512-DPQgBAedzjsFD7rgv7b6OKmpHq5VTBUCLmYfDiov2FC2C79QGaz+4iNmlVAem5iSicvN8DWTwU1kZ48XYLtuqg==",
+			"dev": true
+		},
 		"@webcomponents/webcomponents-platform": {
 			"version": "1.0.1",
 			"resolved": "https://registry.npmjs.org/@webcomponents/webcomponents-platform/-/webcomponents-platform-1.0.1.tgz",
@@ -662,13 +686,21 @@
 			"dev": true
 		},
 		"copy-props": {
-			"version": "2.0.4",
-			"resolved": "https://registry.npmjs.org/copy-props/-/copy-props-2.0.4.tgz",
-			"integrity": "sha512-7cjuUME+p+S3HZlbllgsn2CDwS+5eCCX16qBgNC4jgSTf49qR1VKy/Zhl400m0IQXl/bPGEVqncgUUMjrr4s8A==",
+			"version": "2.0.5",
+			"resolved": "https://registry.npmjs.org/copy-props/-/copy-props-2.0.5.tgz",
+			"integrity": "sha512-XBlx8HSqrT0ObQwmSzM7WE5k8FxTV75h1DX1Z3n6NhQ/UYYAvInWYmG06vFt7hQZArE2fuO62aihiWIVQwh1sw==",
 			"dev": true,
 			"requires": {
-				"each-props": "^1.3.0",
-				"is-plain-object": "^2.0.1"
+				"each-props": "^1.3.2",
+				"is-plain-object": "^5.0.0"
+			},
+			"dependencies": {
+				"is-plain-object": {
+					"version": "5.0.0",
+					"resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-5.0.0.tgz",
+					"integrity": "sha512-VRSzKkbMm5jMDoKLbltAkFQ5Qr7VDiTFGXxYFXXowVj387GeGNOCsOH6Msy00SGZ3Fp84b1Naa1psqgcCIEP5Q==",
+					"dev": true
+				}
 			}
 		},
 		"core-util-is": {