Update non-AVA dependencies

Author: novemberborn

package.json

@@ -29,10 +29,10 @@
 		"@ava/typescript": "^1.1.1",
 		"@sindresorhus/tsconfig": "^0.7.0",
 		"ava": "^3.13.0",
-		"c8": "^7.3.1",
-		"del-cli": "^3.0.1",
-		"tsd": "^0.13.1",
-		"typescript": "^4.0.3",
+		"c8": "^7.10.0",
+		"del-cli": "^4.0.1",
+		"tsd": "^0.18.0",
+		"typescript": "^4.4.4",
 		"xo": "^0.46.4"
 	},
 	"dependencies": {