Remove pg_release from CI

.github/workflows/build_tembo_pg_slim.yaml

@@ -40,7 +40,7 @@ jobs:
       - name: Append PostgreSQL configurations to matrix
         id: append_pg_configs
         run: |
-          PG_CONFIGS='[{"pg_release": "14.10", "pg_version": "14"}, {"pg_release": "15.3", "pg_version": "15"}, {"pg_release": "16.1", "pg_version": "16"}]'
+          PG_CONFIGS='[{"pg_version": "14"}, {"pg_version": "15"}, {"pg_version": "16"}]'
           MODIFIED_MATRIX=$(echo $PG_CONFIGS | jq -c '{include: .}')
           echo "build_matrix=$MODIFIED_MATRIX" >> $GITHUB_OUTPUT
       - name: Determine which tags to publish
@@ -105,7 +105,7 @@ jobs:
       - name: Build Docker images based on conditions
         run: |
           IMAGE_NAME=$CONTAINER_NAME:${{ matrix.pg_version }}
-          docker build ./$CONTAINER_NAME --build-arg PG_RELEASE=${{ matrix.pg_release }} --build-arg PG_VERSION=${{ matrix.pg_version }} -t $IMAGE_NAME
+          docker build ./$CONTAINER_NAME --build-arg PG_VERSION=${{ matrix.pg_version }} -t $IMAGE_NAME
         shell: bash
       - name: Login to Tembo Quay
         uses: docker/login-action@v2