ci: update supported Elixir/Erlang versions in GHA workflows

In regard to the `main` workflow:

- Elixir updated to v1.18

In regard to the `legacy` workflow:

- Jobs for v1.12 and v1.13 removed
- Jobs for v1.14, 1.15 now using Erlang v25, v26
- Job for v1.16 added with Erlang v25, v26
- Job for v1.17 added with Erlang v25, v26, v27

Author: joeljuca

.github/workflows/legacy.yml

@@ -4,13 +4,13 @@ on:
   push:
 
 jobs:
-  v1dot15:
-    runs-on: ubuntu-20.04
+  v1dot17:
+    runs-on: ubuntu-22.04
     name: elixir-${{ matrix.elixir }}-otp-${{ matrix.otp }}
     strategy:
       matrix:
-        otp: ["24", "25"]
-        elixir: ["1.15"]
+        otp: ["25", "26", "27"]
+        elixir: ["1.17"]
     services:
       postgres:
         image: postgres:16.1-alpine3.19
@@ -37,13 +37,13 @@ jobs:
       - run: MIX_ENV=test mix do deps.get + deps.compile + compile
       - run: mix test
 
-  v1dot14:
-    runs-on: ubuntu-20.04
+  v1dot16:
+    runs-on: ubuntu-22.04
     name: elixir-${{ matrix.elixir }}-otp-${{ matrix.otp }}
     strategy:
       matrix:
-        otp: ["23", "24", "25"]
-        elixir: ["1.14"]
+        otp: ["25", "26"]
+        elixir: ["1.16"]
     services:
       postgres:
         image: postgres:16.1-alpine3.19
@@ -70,13 +70,13 @@ jobs:
       - run: MIX_ENV=test mix do deps.get + deps.compile + compile
       - run: mix test
 
-  v1dot13:
-    runs-on: ubuntu-20.04
+  v1dot15:
+    runs-on: ubuntu-22.04
     name: elixir-${{ matrix.elixir }}-otp-${{ matrix.otp }}
     strategy:
       matrix:
-        otp: ["22", "23", "24", "25"]
-        elixir: ["1.13"]
+        otp: ["25", "26"]
+        elixir: ["1.15"]
     services:
       postgres:
         image: postgres:16.1-alpine3.19
@@ -103,13 +103,13 @@ jobs:
       - run: MIX_ENV=test mix do deps.get + deps.compile + compile
       - run: mix test
 
-  v1dot12:
-    runs-on: ubuntu-20.04
+  v1dot14:
+    runs-on: ubuntu-22.04
     name: elixir-${{ matrix.elixir }}-otp-${{ matrix.otp }}
     strategy:
       matrix:
-        otp: ["22", "23", "24"]
-        elixir: ["1.12"]
+        otp: ["25", "26"]
+        elixir: ["1.14"]
     services:
       postgres:
         image: postgres:16.1-alpine3.19

.github/workflows/main.yml

@@ -5,7 +5,7 @@ on:
 
 env:
   OTP_VERSION: "27"
-  ELIXIR_VERSION: "1.17"
+  ELIXIR_VERSION: "1.18"
 
 jobs:
   style: