Freeze dbt version for integration tests

.github/workflows/pr_tests.yml

@@ -59,8 +59,9 @@ jobs:
         # Run tests from integration_tests sub dir
         working-directory: ./integration_tests
     strategy:
+      fail-fast: false
       matrix:
-        dbt_version: ["1.*"]
+        dbt_version: ["1.8.*"]
         warehouse: ["postgres", "bigquery", "snowflake", "databricks", "redshift"] # TODO: Add RS self-hosted runner
     services:
       postgres:
@@ -111,7 +112,8 @@ jobs:
       - name: Install dependencies
         run: |
           pip install wheel setuptools
-          pip install -Iv dbt-${{ matrix.warehouse }}==${{ matrix.dbt_version }} --upgrade
+          pip install -Iv pip install dbt-core>=1.8.0,<1.9.0
+          pip install -Iv dbt-${{ matrix.warehouse } --no-deps
           dbt deps
         if: ${{matrix.warehouse != 'spark'}}