ci/config.sh: Pin versions for all extra_packages

This is one way to fix ghc/ghc#23141. It's perhaps not the cleanest way to fix
it (see ghc/ghc#23141 (comment 488083)), but a
working build is better than a broken one.

ci/config.sh

@@ -112,27 +112,27 @@ esac
 # ==============
 #
 # These are packages which we don't have patches for but want to test anyways.
-extra_package lens
-extra_package optics
-extra_package aeson
-extra_package criterion
-extra_package scotty
-extra_package generic-lens
-extra_package microstache
+extra_package lens 5.2.1
+extra_package optics 0.4.2
+extra_package aeson 2.1.2.1
+extra_package criterion 1.6.0.0
+extra_package scotty 0.12.1
+extra_package generic-lens 2.2.1.0
+extra_package microstache 1.0.2.3
 extra_package singletons-base 3.1
-extra_package servant
-extra_package hgmp
-extra_package Agda
-extra_package mmark
+extra_package servant 0.19.1
+extra_package hgmp 0.1.2.1
+extra_package Agda 2.6.3
+extra_package mmark 0.0.7.6
 extra_package doctest 0.21.0
-extra_package tasty
-extra_package pandoc
-extra_package servant-conduit
-extra_package servant-machines
-extra_package linear-generics
+extra_package tasty 1.4.3
+extra_package pandoc 3.1.1
+extra_package servant-conduit 0.15.1
+extra_package servant-machines 0.15.1
+extra_package linear-generics 0.2.1
 
 # This package is affected by https://gitlab.haskell.org/ghc/ghc/-/issues/22912
-extra_package vector-space
+extra_package vector-space 0.16
 
 # Build-tool packages
 build_tool_package alex