chore: explicitly add quotes to error format (#605)

The current format produces the output: `not all assertAll expressions evaluated to true: expression "<some-expression>" evaluated to %!q(bool=false)`. This change fixes the same.

Signed-off-by: Kumar Mallikarjuna <kumarmallikarjuna.work@gmail.com>

pkg/expressions/cel.go

@@ -134,7 +134,7 @@ func evaluateExpression(expr string,
 	}
 
 	if out.Value() != true {
-		return fmt.Errorf("expression %q evaluated to %q", expr, out.Value())
+		return fmt.Errorf("expression %q evaluated to '%v'", expr, out.Value())
 	}
 
 	return nil