Give CI matrix jobs readable names

GitHub renders matrix job names from raw axis values by default, so
runs showed up as `test (3.3, ACTIVE_RECORD_VERSION=~> 7.2.0, false)`
— readable only after squinting.

Group the ActiveRecord axis into an object with a short `label` and a
`env` payload, then set the job `name:` to
`Ruby <ruby-version> / <label>`. Runs now show up as e.g.
`Ruby 3.3 / AR 7.2` or `Ruby 4.0 / AR main`.

Author: nertzy

.github/workflows/ci.yml

@@ -14,6 +14,7 @@ on:
 
 jobs:
   test:
+    name: Ruby ${{ matrix.ruby-version }} / ${{ matrix.active-record.label }}
     runs-on: ubuntu-latest
     services:
       postgres:
@@ -37,40 +38,40 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version: ["3.3", "3.4", "4.0"]
-        active-record-env:
-          - "ACTIVE_RECORD_VERSION=~> 7.2.0"
-          - "ACTIVE_RECORD_VERSION=~> 8.0.0"
-          - "ACTIVE_RECORD_VERSION=~> 8.1.0"
+        active-record:
+          - { label: "AR 7.2", env: "ACTIVE_RECORD_VERSION=~> 7.2.0" }
+          - { label: "AR 8.0", env: "ACTIVE_RECORD_VERSION=~> 8.0.0" }
+          - { label: "AR 8.1", env: "ACTIVE_RECORD_VERSION=~> 8.1.0" }
         allow-failure: [false]
         include:
           - ruby-version: "ruby-head"
-            active-record-env: "ACTIVE_RECORD_VERSION=~> 8.1.0"
+            active-record: { label: "AR 8.1", env: "ACTIVE_RECORD_VERSION=~> 8.1.0" }
             allow-failure: true
           - ruby-version: "4.0"
-            active-record-env: "ACTIVE_RECORD_BRANCH=main"
+            active-record: { label: "AR main", env: "ACTIVE_RECORD_BRANCH=main" }
             allow-failure: true
           - ruby-version: "4.0"
-            active-record-env: "ACTIVE_RECORD_BRANCH=8-1-stable"
+            active-record: { label: "AR 8-1-stable", env: "ACTIVE_RECORD_BRANCH=8-1-stable" }
             allow-failure: true
           - ruby-version: "4.0"
-            active-record-env: "ACTIVE_RECORD_BRANCH=8-0-stable"
+            active-record: { label: "AR 8-0-stable", env: "ACTIVE_RECORD_BRANCH=8-0-stable" }
             allow-failure: true
           - ruby-version: "4.0"
-            active-record-env: "ACTIVE_RECORD_BRANCH=7-2-stable"
+            active-record: { label: "AR 7-2-stable", env: "ACTIVE_RECORD_BRANCH=7-2-stable" }
             allow-failure: true
     continue-on-error: ${{ matrix.allow-failure }}
     steps:
       - uses: actions/checkout@v6
       - name: Select ActiveRecord version
         env:
-          ACTIVE_RECORD_ENV: ${{ matrix.active-record-env }}
+          ACTIVE_RECORD_ENV: ${{ matrix.active-record.env }}
         run: echo "$ACTIVE_RECORD_ENV" >> "$GITHUB_ENV"
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true
-          cache-version: ${{ matrix.active-record-env }}
+          cache-version: ${{ matrix.active-record.env }}
       - name: Set up test database
         env:
           PGPASSWORD: postgres