Update to Nodejs22 (#832)

* Update README.md

* Update app.yaml

Nodejs18 has reached EOL. Updating to 22

Author: kindavishal

README.md

@@ -1,5 +1,6 @@
 ## Welcome to the Google Dev Library
 
+
 [![Get started with Google Dev Library](https://img.youtube.com/vi/XrIuuJ6YFzY/0.jpg)](https://youtu.be/XrIuuJ6YFzY)
 
 [Google Dev Library](https://devlibrary.withgoogle.com) is content library of open source projects and technical blogs featuring Google technologies authored and contributed by developers from around the world. Find the inspiration you need for your next project with #googledevlibrary!

app/app.yaml

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-runtime: nodejs18
+runtime: nodejs22
 handlers:
 # Serve all static files with url ending with a file extension
 - url: /(.*\..+)$