Update versions-manifest (#177)

Co-authored-by: Service account <[email protected]>

Author: github-actions[bot]

versions-manifest.json

@@ -171,6 +171,50 @@
       }
     ]
   },
+  {
+    "version": "20.15.0",
+    "stable": true,
+    "lts": "Iron",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/20.15.0-9607683765",
+    "files": [
+      {
+        "filename": "node-20.15.0-darwin-arm64.tar.gz",
+        "arch": "arm64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.15.0-9607683765/node-20.15.0-darwin-arm64.tar.gz"
+      },
+      {
+        "filename": "node-20.15.0-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.15.0-9607683765/node-20.15.0-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-20.15.0-linux-arm64.tar.gz",
+        "arch": "arm64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.15.0-9607683765/node-20.15.0-linux-arm64.tar.gz"
+      },
+      {
+        "filename": "node-20.15.0-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.15.0-9607683765/node-20.15.0-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-20.15.0-win32-arm64.7z",
+        "arch": "arm64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.15.0-9607683765/node-20.15.0-win32-arm64.7z"
+      },
+      {
+        "filename": "node-20.15.0-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/20.15.0-9607683765/node-20.15.0-win32-x64.7z"
+      }
+    ]
+  },
   {
     "version": "20.14.0",
     "stable": true,