fix: update GitHub Actions workflows for Node 20+ compatibility

- Fix version-check.yml to use tsx instead of node for TypeScript files
- Remove Node 18 from CI matrix (project requires Node 20+)
- Add yarn install step before running version check

Author: josedacosta

.github/workflows/ci.yml

@@ -61,7 +61,7 @@ jobs:
         strategy:
             matrix:
                 os: [ubuntu-latest, macos-latest, windows-latest]
-                node: [18, 20, 22]
+                node: [20, 22]
 
         steps:
             - uses: actions/checkout@v4

.github/workflows/version-check.yml

@@ -20,10 +20,12 @@ jobs:
               with:
                   node-version: '20'
 
+            - name: Install dependencies
+              run: yarn install --frozen-lockfile
+
             - name: Check version consistency
               run: |
-                  chmod +x scripts/version/check-version-consistency.js
-                  node scripts/version/check-version-consistency.js
+                  npx tsx scripts/version/check-version-consistency.ts
 
             - name: Report status
               if: failure()