Fix missing isa dependency

packaging/debian/control

  shellfu-bash-pretty,
  shellfu-bash-saturnin (>= __VDEP_SATURNIN_GE__),
  shellfu-bash-saturnin (<< __VDEP_SATURNIN_LT__),
+ shellfu-sh-isa,
 Description: __MKIT_PROJ_TAGLINE__
 
 Package: shellfu-bash-dottum

packaging/template.spec

 Requires: %shellfu_req
 Requires: shellfu-bash
 Requires: shellfu-bash-pretty
+Requires: shellfu-sh-isa
 
 %description
 __MKIT_PROJ_TAGLINE__