Downgrade to Ruby 3.2.3

.github/workflows/build.yml

@@ -10,13 +10,10 @@ jobs:
 
       - name: Use Node.js
         uses: actions/setup-node@v3
-        with:
-          node-version: '20.9.0'
 
       - name: Use Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.3.0'
           bundler-cache: true
 
       - run: yarn install --frozen-lockfile

.github/workflows/deploy.yml

@@ -20,13 +20,10 @@ jobs:
 
       - name: Use Node.js
         uses: actions/setup-node@v3
-        with:
-          node-version: '20.9.0'
 
       - name: Use Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.3.0'
           bundler-cache: true
 
       - run: yarn install --frozen-lockfile

.node-version

@@ -0,0 +1 @@
+20.9.0

.ruby-version

@@ -0,0 +1 @@
+3.2.3

CONTRIBUTING.md

@@ -1,5 +1,11 @@
 # Developer notes
 
+## Runtimes
+
+Requires Node.js, Ruby, Yarn v1.
+
+See `.ruby-version` and `.node-version` for supported versions.
+
 ## Gitpod
 
 This repository supports contribution using [gitpod](https://gitpod.io) which is online IDE using [Theia](https://github.com/eclipse-theia/theia).

netlify.toml

@@ -1,7 +1,7 @@
 [build]
   command = "yarn build"
   publish = "_site/"
-  environment = { NODE_VERSION = "20.9.0", RUBY_VERSION = "3.3.0", PYTHON_VERSION = "3.8" }
+  environment = { NODE_VERSION = "20.9.0", RUBY_VERSION = "3.2.3", PYTHON_VERSION = "3.8" }
 
 [[redirects]]
   force = true