README: don't recommend 'latest' for 'ghc-version'

The Haskell ecosystem might need some time to catch up after a GHC
release, so switching to the latest GHC early might break the build.

Users might still prefer 'latest', especially if CI runs seldom,
but we should not generally recommend it.

setup/README.md

@@ -190,8 +190,8 @@ jobs:
 
 | Name                    | Description                                                                                                                                 | Type      | Default     |
 | ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | --------- | ----------- |
-| `ghc-version`           | GHC version to use, e.g. `9.2` or `9.2.4`.                                                                                                  | `string`  | `latest`    |
-| `cabal-version`         | Cabal version to use, e.g. `3.4`.                                                                                                           | `string`  | `latest`    |
+| `ghc-version`           | GHC version to use, e.g. `9.2` or `9.2.5`.                                                                                                  | `string`  | `latest`    |
+| `cabal-version`         | Cabal version to use, e.g. `3.6`.                                                                                                           | `string`  | `latest`    |
 | `stack-version`         | Stack version to use, e.g. `latest`. Stack will only be installed if `enable-stack` is set.                                                 | `string`  | `latest`    |
 | `enable-stack`          | If set, will setup Stack.                                                                                                                   | "boolean" | false/unset |
 | `stack-no-global`       | If set, `enable-stack` must be set. Prevents installing GHC and Cabal globally.                                                             | "boolean" | false/unset |
@@ -223,7 +223,7 @@ In contrast, a proper `boolean` input like `cabal-update` only accepts values `t
 
 **GHC:**
 
-- `latest` (default, recommended)
+- `latest` (default)
 - `9.6.1` `9.6`
 - `9.4.4` `9.4`
 - `9.4.3`
@@ -262,7 +262,7 @@ In contrast, a proper `boolean` input like `cabal-update` only accepts values `t
 - `8.0.2` `8.0`
 - `7.10.3` `7.10`
 
-Suggestion: Try to support the three latest major versions of GHC.
+Suggestion: Try to support at least the three latest major versions of GHC.
 
 **Cabal:**
 
@@ -279,9 +279,9 @@ Suggestion: Try to support the three latest major versions of GHC.
 
 Recommendation: Use the latest available version if possible.
 
-**Stack:**
+**Stack:** (with `enable-stack: true`)
 
-- `latest` (recommended) -- follows the latest release automatically.
+- `latest` (default, recommended)
 - `2.9.3` `2.9`
 - `2.9.1`
 - `2.7.5` `2.7`