try to change ubuntu image in workflow

Author: jarlah

.github/workflows/elixir.yml

@@ -30,10 +30,6 @@ jobs:
             otp: 26.2
           - elixir: 1.14
             otp: 25.3
-          - elixir: 1.13
-            otp: 25.3
-          - elixir: 1.13
-            otp: 24.2
 
     steps:
     - uses: actions/checkout@v3
@@ -64,7 +60,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Set up Elixir
-      uses: erlef/setup-beam@61e01a43a562a89bfc54c7f9a378ff67b03e4a21 # v1.16.0
+      uses: erlef/setup-beam@v1
       with:
         elixir-version: '1.16' # [Required] Define the Elixir version
         otp-version: '26.2'      # [Required] Define the Erlang/OTP version