chore(@types/node): Bump from v18.18.5 to v20.9.0

We are already using Node.js 20.9.0 via asdf, so use the corresponding
version of @types/node.

package.json

@@ -33,7 +33,7 @@
     "@tsconfig/strictest": "2.0.2",
     "@types/eslint": "8.44.4",
     "@types/jest": "29.5.7",
-    "@types/node": "18.18.5",
+    "@types/node": "20.9.0",
     "@typescript-eslint/eslint-plugin": "6.9.1",
     "@typescript-eslint/parser": "6.9.1",
     "@vercel/ncc": "0.38.0",

yarn.lock

@@ -1276,19 +1276,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node@npm:*":
-  version: 20.8.6
-  resolution: "@types/node@npm:20.8.6"
+"@types/node@npm:*, @types/node@npm:20.9.0":
+  version: 20.9.0
+  resolution: "@types/node@npm:20.9.0"
   dependencies:
-    undici-types: ~5.25.1
-  checksum: ccfb7ac482c5a96edeb239893c5c099f5257fcc2ed9ae62fefdfbc782b79e16dbc2af9a85b379665237bf759904b44ca2be68e75d239e0297882aad42f61905c
-  languageName: node
-  linkType: hard
-
-"@types/node@npm:18.18.5":
-  version: 18.18.5
-  resolution: "@types/node@npm:18.18.5"
-  checksum: fc8c9b2bf226270cf9085a7dac76ce09dd7c3519ec9b687ee2b50385954ab3709c45ca82d002d1536e24286803cd194d7ab7008acebdcd6681b8b19d4277fa5c
+    undici-types: ~5.26.4
+  checksum: bfd927da6bff8a32051fa44bb47ca32a56d2c8bc8ba0170770f181cc1fa3c0b05863c9b930f0ba8604a48d5eb0d319166601709ca53bf2deae0025d8b6c6b8a3
   languageName: node
   linkType: hard
 
@@ -2405,7 +2398,7 @@ __metadata:
     "@tsconfig/strictest": 2.0.2
     "@types/eslint": 8.44.4
     "@types/jest": 29.5.7
-    "@types/node": 18.18.5
+    "@types/node": 20.9.0
     "@typescript-eslint/eslint-plugin": 6.9.1
     "@typescript-eslint/parser": 6.9.1
     "@vercel/ncc": 0.38.0
@@ -5444,10 +5437,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"undici-types@npm:~5.25.1":
-  version: 5.25.3
-  resolution: "undici-types@npm:5.25.3"
-  checksum: ec9d2cc36520cbd9fbe3b3b6c682a87fe5be214699e1f57d1e3d9a2cb5be422e62735f06e0067dc325fd3dd7404c697e4d479f9147dc8a804e049e29f357f2ff
+"undici-types@npm:~5.26.4":
+  version: 5.26.5
+  resolution: "undici-types@npm:5.26.5"
+  checksum: 3192ef6f3fd5df652f2dc1cd782b49d6ff14dc98e5dced492aa8a8c65425227da5da6aafe22523c67f035a272c599bb89cfe803c1db6311e44bed3042fc25487
   languageName: node
   linkType: hard