MFH: r498632

net/remotebox: Update dependency after net/tigervnc separation

• vncviewer is now installed as net/tigervnc-viewer
• Bump PORTREISION due to dependency change
• Pet portlint (extra item in USES section)

PR: 236928
Submitted by: myself
Approved by: kai (maintainer)

Approved by: portmgr (antonie)