Setup Github actions for use in SQM projects

This replaces the Github actions used by the official Bootstrap repo
with ones that allow us to maintain and publish the gem in the SQM
package repo. The actions are the same as the ones we use for our own
gems, with the following small differences:

1. Bootstrap uses "main" instead of "master" for its release branch.
2. Using Bootstrap's Rake task for building the gem.
3. Releasing the packaged gem from the `pkg` directory.

This should ensure that the modified gem that we use is a close as
possible to the official Bootstrap release.

This also updates the gem's version number, using the fourth position
to designate the custom SQM version.

[1207966452799142](https://app.asana.com/0/0/1207966452799142/f)

.github/workflows/gem-push.yml

@@ -0,0 +1,29 @@
+name: Build and Push Gem
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Build + Publish
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby 3.3
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: 3.3
+
+    - name: Publish to Github Package Registry
+      run: |
+        mkdir -p $HOME/.gem
+        touch $HOME/.gem/credentials
+        chmod 0600 $HOME/.gem/credentials
+        printf -- "---\n:github: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
+        rake build
+        gem push --KEY github --host https://rubygems.pkg.github.com/${OWNER} pkg/*.gem
+      env:
+        GEM_HOST_API_KEY: "Bearer ${{secrets.GITHUB_TOKEN}}"
+        OWNER: ${{ github.repository_owner }}

.github/workflows/gem-version-check.yml

@@ -0,0 +1,17 @@
+name: Verify Gem Version Change
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Version Check
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Version Forget Me Not
+      uses: simplybusiness/version-forget-me-not@v2
+      env:
+        ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        VERSION_FILE_PATH: "lib/bootstrap5/version.rb"

lib/bootstrap5/version.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
 module Bootstrap5
-  VERSION       = '5.3.3'
+  VERSION       = '5.3.3.1'
   BOOTSTRAP_SHA = '6e1f75f420f68e1d52733b8e407fc7c3766c9dba'
 end