Update dependency @types/readable-stream to v4

Author: renovate[bot]

package.json

@@ -92,7 +92,7 @@
   },
   "dependencies": {
     "@rdfjs/types": "*",
-    "@types/readable-stream": "^2.3.13",
+    "@types/readable-stream": "^4.0.0",
     "buffer": "^6.0.3",
     "rdf-data-factory": "^1.1.0",
     "relative-to-absolute-iri": "^1.0.0",

yarn.lock

@@ -742,6 +742,14 @@
     "@types/node" "*"
     safe-buffer "~5.1.1"
 
+"@types/readable-stream@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@types/readable-stream/-/readable-stream-4.0.0.tgz#9bcb888b9c77478b02490365d3e0c34fd8b6d5ae"
+  integrity sha512-s6YqDV111kwuFsT9SwFC+FmZ5n1SEp4H9DXGg6Zqag0lPGeEvBGP9UaLJYpX4cxY7fAFnx2avy1QVvft0LLb7g==
+  dependencies:
+    "@types/node" "*"
+    safe-buffer "~5.1.1"
+
 "@types/sax@^1.0.1":
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/@types/sax/-/sax-1.2.4.tgz#8221affa7f4f3cb21abd22f244cfabfa63e6a69e"