Fix PostgreSQL client installation for all versions

- Add PostgreSQL official APT repository to support all versions
- Install postgresql-client-common and postgresql-client packages
- This resolves 'Unable to locate package postgresql-client-17' error
- Applied to both main test and beta test jobs

Author: NikolayS

.github/workflows/test.yml

@@ -35,8 +35,15 @@ jobs:
 
     - name: Install PostgreSQL client
       run: |
+        # Add PostgreSQL official APT repository
         sudo apt-get update
-        sudo apt-get install -y postgresql-client
+        sudo apt-get install -y wget ca-certificates
+        wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
+        echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list
+        sudo apt-get update
+        
+        # Install PostgreSQL client (will get the latest version available)
+        sudo apt-get install -y postgresql-client-common postgresql-client
     
     - name: Configure PostgreSQL for pg_stat_statements
       run: |
@@ -167,8 +174,15 @@ jobs:
 
     - name: Install PostgreSQL client
       run: |
+        # Add PostgreSQL official APT repository
         sudo apt-get update
-        sudo apt-get install -y postgresql-client
+        sudo apt-get install -y wget ca-certificates
+        wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
+        echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list
+        sudo apt-get update
+        
+        # Install PostgreSQL client (will get the latest version available)
+        sudo apt-get install -y postgresql-client-common postgresql-client
     
     - name: Configure PostgreSQL for pg_stat_statements
       run: |