www/p5-CGI-Response: Mark DEPRECATED

• Switch to DISTVERSION while I am here
• Fix fetch
• Set EXPIRATION_DATE 2026-10-24
• No functional upstream release since 0.03 (1995)
• The CGI response-construction model it implements has been superseded by PSGI/Plack in modern Perl web applications
• No consumers on the tree

(cherry picked from commit 4276b29db42a02185bde90805371c080c5c09530)