Preparing to unpack .../linux-modules-5.15.0-73-generic_5.15.0-73.80_amd64.deb ...
Unpacking linux-modules-5.15.0-73-generic (5.15.0-73.80) ...
Selecting previously unselected package linux-image-5.15.0-73-generic.
Preparing to unpack .../linux-image-5.15.0-73-generic_5.15.0-73.80_amd64.deb ...
Unpacking linux-image-5.15.0-73-generic (5.15.0-73.80) ...
dpkg: error processing archive /var/cache/apt/archives/linux-image-5.15.0-73-generic_5.15.0-73.80_amd64.deb (--unpack):
 unable to open '/boot/vmlinuz-5.15.0-73-generic.dpkg-new': Operation not permitted