Add GHC-9.2.6

[TeofilC]

Adds GHC 9.2.6

[TeofilC]

The materialization script fails atm with this error:

error: builder for '/nix/store/ff11xx3zxpxb4ibag7qyrj3vsc0xq1ss-nix-tools-plan-to-nix-pkgs.drv' failed with exit code 1;
       last 10 log lines:
       > target requires ==2.1.0.1)
       > [__0] trying: hackage-db-2.1.0.1
       > [__1] trying: base-4.16.4.0/installed-4.16.4.0 (dependency of hackage-db)
       > [__2] next goal: nix-tools (user goal)
       > [__2] rejecting: nix-tools-0.1.0.0 (conflict:
       > base==4.16.4.0/installed-4.16.4.0, nix-tools => base>=4 && <4.15)
       > [__2] fail (backjumping, conflict set: base, nix-tools)
       > After searching the rest of the dependency tree exhaustively, these were the
       > goals I've had most trouble fulfilling: base, nix-tools, hackage-db
       > )
       For full logs, run 'nix log /nix/store/ff11xx3zxpxb4ibag7qyrj3vsc0xq1ss-nix-tools-plan-to-nix-pkgs.drv'.
error: 1 dependencies of derivation '/nix/store/sa4aqqlgjiiyy4fvbm3fp56fchhbszcb-generateMaterialized.drv' failed to build
error: 1 dependencies of derivation '/nix/store/q6da1c003zv4h37bh2gqdwldrzxly44b-updateMaterialized.drv' failed to build
error: 1 dependencies of derivation '/nix/store/22vjqpvdm3c41qjps0vfr9hfjzwzjql2-nix-tools-plan-to-nix-pkgs.drv' failed to build

[angerman]

I believe bumping the nix-tools base bound should be ok. I wonder why we didn't run into this before.

[angerman]

@TeofilC after discussion with @hamishmack, we will try to merge #1815 prior to adding 9.2.6, both will require major rebuilds :-/

[TeofilC]

Many thanks @hamishmack !