Fix SQL Server password in copilot-setup-steps.yml (#38445)

Co-authored-by: AndriySvyryd <6539701+AndriySvyryd@users.noreply.github.com>

Author: Copilot

.github/workflows/copilot-setup-steps.yml

@@ -62,7 +62,7 @@ jobs:
 
       - name: Export environment variables for the agent's session
         run: |
-          echo "Test__SqlServer__DefaultConnection=Server=localhost;Database=test;User=SA;Password=PLACEHOLDERPass$$w0rd;Connect Timeout=60;ConnectRetryCount=0;Trust Server Certificate=true" >> "$GITHUB_ENV"
+          echo "Test__SqlServer__DefaultConnection=Server=localhost;Database=test;User=SA;Password=PLACEHOLDERPass\$\$w0rd;Connect Timeout=60;ConnectRetryCount=0;Trust Server Certificate=true" >> "$GITHUB_ENV"
           echo "Test__Cosmos__DefaultConnection=https://localhost:8081" >> "$GITHUB_ENV"
           echo "Test__Cosmos__EmulatorType=linux" >> "$GITHUB_ENV"
           echo "Test__Cosmos__SkipConnectionCheck=true" >> "$GITHUB_ENV"