<scp>XBB</scp>.1.5‐Adapted <scp>COVID</scp>‐19 <scp>mRNA</scp> Vaccines but Not Infections With Previous Omicron Variants Boost Neutralisation Against the <scp>SARS</scp>‐<scp>CoV</scp>‐2 <scp>JN</scp>.1 Variant in Patients With Inflammatory Bowel Disease