Bump nightly container build workflow crystal ver

.github/workflows/build-nightly-container.yml

@@ -24,9 +24,9 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Crystal
-        uses: crystal-lang/install-crystal@v1.8.0
+        uses: crystal-lang/install-crystal@v1.8.2
         with:
-          crystal: 1.9.2
+          crystal: 1.12.2
 
       - name: Run lint
         run: |