Bump the version of the ikalnytskyi/action-setup-postgres action

It looks like v1 no longer works on Mac OS images.

Author: malor

.github/workflows/release.yml

@@ -59,7 +59,7 @@ jobs:
           override: true
 
       - name: Setup PostgreSQL
-        uses: ikalnytskyi/action-setup-postgres@v1
+        uses: ikalnytskyi/action-setup-postgres@v6
 
       - uses: actions-rs/cargo@v1
         with:

.github/workflows/tests.yml

@@ -70,7 +70,7 @@ jobs:
           override: true
 
       - name: Setup PostgreSQL
-        uses: ikalnytskyi/action-setup-postgres@v1
+        uses: ikalnytskyi/action-setup-postgres@v6
         id: postgres
 
       - name: Set ROCKET_DATABASE_URL
@@ -120,7 +120,7 @@ jobs:
           override: true
 
       - name: Setup PostgreSQL
-        uses: ikalnytskyi/action-setup-postgres@v1
+        uses: ikalnytskyi/action-setup-postgres@v6
         id: postgres
 
       - run: |