Update post

_posts/2023-09-10-self-hosting-ghost-on-google-cloud.md

@@ -184,7 +184,7 @@ The whole thing takes 1-2 hours depending on your comfort level with the various
    sudo apt install -y ca-certificates curl gnupg
    sudo mkdir -p /etc/apt/keyrings
    curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
-   NODE_MAJOR=18
+   NODE_MAJOR=20
    echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list
    sudo apt update
    sudo apt install nodejs -y
@@ -472,6 +472,8 @@ This walkthrough last worked for me in **September 2023**. If you spot errors, v
 
 ## Changelog
 
+- **2024-09-20**: Update Nodejs installation instructions to install v20, [as recommended by Ghost](https://ghost.org/docs/faq/node-versions/).
+
 - **2024-07-24**: Add step to disable [sodoSearch](https://ghost.org/docs/config?via=cathy45&ref=spectralwebservices.com#search) and [improve page load times](https://forum.ghost.org/t/is-it-possible-to-disable-jsdelivr-cdn/31761).
 
 - **2023-12-30**: Simplify creation process of `service_account` user.