Of course you can use bolts and nuts.
The "leak" is likely the result of the hose coming off the nipple on the Intake Manifold, down low at the back under the TMIC. Multiple threads on it. ALL nipples for hoses on the IM are barbless and subject to blowing off under boost... OR when they are disturbed like during the work you did.
Use some superglue and Corbin Clamps for the most reliable repair, or superglue and zip-ties if you must. Again, ALL the "vacuum" hoses become BOOST hoses under power, and there are a bunch of them, so repair them all to preclude similar failures in the future.