Drop rails_7_0 appraisal, pin Rails/ActiveStorage to ~> 8.0, update lock and CI

- Remove gemfiles/rails_7_0.* appraisal files
- Update Appraisals to use "~> 8.0.0" for rails and activestorage
- Adjust rails_8_0.gemfile.lock (activestorage >= 7.1)
- Remove BUNDLE_GEMFILE env from CI workflow

Author: BilalBudhani

.github/workflows/ci.yml

@@ -33,9 +33,6 @@ jobs:
           - ruby-version: "3.0"
             rails-version: "rails-8-0"
 
-    env:
-      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.rails-version }}.gemfile
-
     steps:
       - name: Install packages
         run: sudo apt-get update && sudo apt-get install --no-install-recommends -y build-essential git libyaml-dev pkg-config

Appraisals

@@ -11,6 +11,6 @@ appraise "rails-7-2" do
 end
 
 appraise "rails-8-0" do
-  gem "rails", ">= 8.0.0.alpha"
-  gem "activestorage", ">= 8.0.0.alpha"
+  gem "rails", "~> 8.0.0"
+  gem "activestorage", "~> 8.0.0"
 end

gemfiles/rails_7_0.gemfile

@@ -2,7 +2,7 @@ PATH
   remote: ..
   specs:
     fileboost (0.2.0.pre2)
-      activestorage (>= 7.0)
+      activestorage (>= 7.1)
 
 GEM
   remote: https://rubygems.org/