Also update setup-build location

Author: lauzadis

.github/workflows/continuous-integration.yml

@@ -34,7 +34,7 @@ jobs:
         with:
           path: 'smithy-kotlin'
       - name: Setup build
-        uses: ./.github/actions/setup-build
+        uses: ./smithy-kotlin/.github/actions/setup-build
       - name: Test
         shell: bash
         run: |
@@ -52,7 +52,7 @@ jobs:
         with:
           path: 'smithy-kotlin'
       - name: Setup build
-        uses: ./.github/actions/setup-build
+        uses: ./smithy-kotlin/.github/actions/setup-build
       - name: Test
         shell: bash
         run: |
@@ -75,7 +75,7 @@ jobs:
         with:
           path: 'smithy-kotlin'
       - name: Setup build
-        uses: ./.github/actions/setup-build
+        uses: ./smithy-kotlin/.github/actions/setup-build
       - name: Test
         shell: bash
         run: |