Simplify pipeline

Author: raz-adroll

.github/workflows/erlang.yml

@@ -6,46 +6,16 @@ env:
   ERL_FLAGS: "-enable-feature all"
 
 jobs:
-
-  OTP25:
-    runs-on: ubuntu-24.04
-
-    strategy:
-      matrix:
-        otp: ['25.2.1']
-        rebar: ['3.20.0']
-
-    steps:
-    - uses: actions/checkout@v2
-    - uses: erlef/setup-beam@v1
-      id: setup-beam
-      with:
-        otp-version: ${{matrix.otp}}
-        rebar3-version: ${{matrix.rebar}}
-    - name: Restore _build
-      uses: actions/cache@v4
-      with:
-        path: _build
-        key: _build-cache-for-os-${{runner.os}}-otp-${{steps.setup-beam.outputs.otp-version}}-rebar3-${{steps.setup-beam.outputs.rebar3-version}}-hash-${{hashFiles('rebar.lock')}}
-    - name: Restore rebar3's cache
-      uses: actions/cache@v4
-      with:
-        path: ~/.cache/rebar3
-        key: rebar3-cache-for-os-${{runner.os}}-otp-${{steps.setup-beam.outputs.otp-version}}-rebar3-${{steps.setup-beam.outputs.rebar3-version}}-hash-${{hashFiles('rebar.lock')}}
-    - name: Compile
-      run: rebar3 compile
-    - name: Format check
-      run: rebar3 format --verify
-    - name: Run tests and verifications
-      run: rebar3 test
-
-  OTP27:
+  build:
     runs-on: ubuntu-24.04
 
     strategy:
       matrix:
-        otp: ['27.3.4']
-        rebar: ['3.24.0']
+        include:
+          - otp: '25.2.1'
+            rebar: '3.20.0'
+          - otp: '27.3.4'
+            rebar: '3.24.0'
 
     steps:
     - uses: actions/checkout@v2