Bump Erlang and Elixir versions in CI (#293)

Author: whatyouhide

.github/workflows/ci.yml

@@ -8,20 +8,19 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     env:
       MIX_ENV: test
+
     strategy:
       fail-fast: false
       matrix:
         include:
           - pair:
-              elixir: 1.13.1
-              otp: 24.2
+              elixir: 1.14.2
+              otp: 25.0
             lint: lint
-          - pair:
-              elixir: 1.7.4
-              otp: 19.3.6.13
+
     steps:
       - uses: actions/checkout@v2
 
@@ -30,10 +29,8 @@ jobs:
           otp-version: ${{ matrix.pair.otp }}
           elixir-version: ${{ matrix.pair.elixir }}
 
-      - name: Install Dependencies
-        run: |
-          mix deps.get --only test
-          mix deps.compile
+      - name: Install dependencies
+        run: mix do deps.get --only $MIX_ENV, deps.compile
 
       - name: Check that code is formatted
         run: mix format --check-formatted
@@ -49,3 +46,28 @@ jobs:
 
       - name: Run tests
         run: mix test
+
+  test_older_elixir:
+    runs-on: ubuntu-18.04
+    env:
+      MIX_ENV: test
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - pair:
+              elixir: 1.7.4
+              otp: 19.3.6.13
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ matrix.pair.otp }}
+          elixir-version: ${{ matrix.pair.elixir }}
+
+      - name: Install dependencies
+        run: mix do deps.get --only $MIX_ENV, deps.compile
+
+      - name: Run tests
+        run: mix test