Update versions-manifest (#154)

Co-authored-by: Service account <no-reply@microsoft.com>

versions-manifest.json

@@ -1,4 +1,29 @@
 [
+  {
+    "version": "20.8.0",
+    "stable": true,
+    "release_url": "https://github.com/actions/node-versions/releases/tag/20.8.0-6353460105",
+    "files": [
+      {
+        "filename": "node-20.8.0-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.8.0-6353460105/node-20.8.0-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-20.8.0-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.8.0-6353460105/node-20.8.0-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-20.8.0-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.8.0-6353460105/node-20.8.0-win32-x64.7z"
+      }
+    ]
+  },
   {
     "version": "20.7.0",
     "stable": true,
@@ -274,6 +299,32 @@
       }
     ]
   },
+  {
+    "version": "18.18.1",
+    "stable": true,
+    "lts": "Hydrogen",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/18.18.1-6478376692",
+    "files": [
+      {
+        "filename": "node-18.18.1-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/18.18.1-6478376692/node-18.18.1-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-18.18.1-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/18.18.1-6478376692/node-18.18.1-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-18.18.1-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/18.18.1-6478376692/node-18.18.1-win32-x64.7z"
+      }
+    ]
+  },
   {
     "version": "18.18.0",
     "stable": true,