Bump nodejs from 18.20 to 20.18

This bumps the Node.js version to 20.x and VS Code engine to 1.92.x, which brings the extension to the latest versions that the majority of users are using.

This also updates vsce to v3 as it requires Node v20.

Author: jpogran

.changes/unreleased/INTERNAL-20241023-112037.yaml

@@ -0,0 +1,6 @@
+kind: INTERNAL
+body: Bump nodejs from 18 to 20
+time: 2024-10-23T11:20:37.725009-04:00
+custom:
+    Issue: "1867"
+    Repository: vscode-terraform

.github/workflows/test.yml

@@ -41,7 +41,7 @@ jobs:
       fail-fast: false
       matrix:
         vscode:
-          - '1.86.2'
+          - '1.92.2'
           - 'insiders'
           - 'stable'
         os:

.nvmrc

@@ -1 +1 @@
-18.20
+20.18