Relax bounds for repline

[ysangkok]

In September 2024, it was requested to bump bounds for this package:

• Allow containers 0.7 sdiehl/repline#50

Since then, there has been many reminders for both maintainers:

• Updated stack resolver and allow newer container package sdiehl/repline#51
• Compatibility with newest dependencies sdiehl/repline#52

I request that the trustees bump the bound of containers, such that containers-0.7 is accepted.

I've tested this with

cabal get repline-0.4.2.0
cabal test -c 'containers==0.7' --allow-newer=repline:containers -w ghc-9.6.5

[andreasabel]

I bumped to <0.9 since this succeeded: cabal test -c 'containers >= 0.8' --allow-newer=containers

[andreasabel]

Note: @ysangkok offered (co-)maintainership to @sdiehl and @adamwespiser in

• Compatibility with newest dependencies sdiehl/repline#52