ekg and ekg-json : Upper bounds need updating

[erikd]

PR of ekg-json is haskell-github-trust/ekg-json#21 (dated 2024/08/07)

Issue for ekg is haskell-github-trust/ekg#94 (dated 2024/08/07)

Email sent to the maintainers.

[erikd]

Hackage metadata edit to bump upper bound onbase for both packages.