Fix CI

Author: sylane

.github/workflows/ci.yml

@@ -7,28 +7,28 @@ on:
 
 jobs:
   ci:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     name: Erlang ${{matrix.otp}} / rebar ${{matrix.rebar3}}
     strategy:
       matrix:
-        otp: ['25', '26', '27']
+        otp: ['26', '27']
         rebar3: ['3']
         # latest rebar3 versions that do not give problems with selected OTPs
         include:
-          - otp: '23'
-            rebar3: '3.20.0'
           - otp: '24'
             rebar3: '3.23.0'
+          - otp: '25'
+            rebar3: '3.24.0'
     steps:
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - uses: erlef/setup-beam@v1
         with:
           otp-version: ${{matrix.otp}}
           rebar3-version: ${{matrix.rebar3}}
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         env:
           cache-name: rebar3
         with: