Shift workflow version from 24..26 to 25..27

Author: tomas-abrahamsson

.github/workflows/ci.yaml

@@ -17,15 +17,15 @@ jobs:
       fail-fast: false
       matrix:
         combo:
-          - os: 'ubuntu-latest'
-            otp-version: '24'
-            rebar3-version: '3.16'
           - os: 'ubuntu-latest'
             otp-version: '25'
             rebar3-version: '3.16'
           - os: 'ubuntu-latest'
             otp-version: '26'
             rebar3-version: '3.22.1'
+          - os: 'ubuntu-latest'
+            otp-version: '27'
+            rebar3-version: '3.24.0'
 
     steps:
     - uses: actions/checkout@v2