Upgrading node to 20.x (#912)

* Upgrading node to 20.x

* Update node types

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ['18', '20']
+        node-version: ['20']
         python-version: ['3.11']
     steps:
       - name: Checkout repo

.github/workflows/deploy.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ['18']
+        node-version: ['20']
         python-version: ['3.11']
     env:
       AWS_PROFILE: transitmatters

.github/workflows/lint.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ['18']
+        node-version: ['20']
         python-version: ['3.11']
     steps:
       - name: Checkout repo
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ['18']
+        node-version: ['20']
         python-version: ['3.11']
     steps:
       - name: Checkout repo

.nvmrc

@@ -1 +1 @@
-18
+20

README.md

@@ -9,7 +9,7 @@ This is the repository for the TransitMatters Data Dashboard. Client code is wri
 
 ## Requirements to develop locally
 
-- node 18.x and npm 9.x required
+- node 20.x and npm 9.x+ required
   - With `nvm` installed, use `nvm install && nvm use`
   - verify with `node -v`
 - Python 3.11 with recent poetry (1.6.0 or later)