Update test matrix & .tool-versions; use Elixir v1.19.0-rc.2

Author: arnodirlam

.github/workflows/ci.yml

@@ -12,17 +12,19 @@ jobs:
       fail-fast: false
       matrix:
         # see https://hexdocs.pm/elixir/compatibility-and-deprecations.html#between-elixir-and-erlang-otp
-        elixir: [1.18.1, 1.17.3, 1.16.3, 1.15.8]
-        otp: [27.1.1, 26.2.5.3, 25.3.2.14]
+        elixir: [1.19.0-rc.2, 1.18.4, 1.17.3, 1.16.3]
+        otp: [28.1, 27.3.4.3, 26.2.5.15]
         exclude:
+        - elixir: 1.17.3
+          otp: 28.1
         - elixir: 1.16.3
-          otp: 27.1.1
-        - elixir: 1.15.8
-          otp: 27.1.1
+          otp: 28.1
+        - elixir: 1.16.3
+          otp: 27.3.4.3
 
     services:
       postgres:
-        image: postgres:13
+        image: postgres:17
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres
@@ -35,7 +37,7 @@ jobs:
       MIX_ENV: test
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: Setup Erlang & Elixir
       uses: erlef/setup-beam@v1
@@ -84,8 +86,8 @@ jobs:
     uses: ./.github/workflows/publish-docs.yml
     secrets: inherit
     with:
-      elixir_version: 1.14.4
-      otp_version: 25.2.3
+      elixir_version: 1.18.4
+      otp_version: 27.3.4.3
 
   release:
     name: Release
@@ -94,5 +96,5 @@ jobs:
     uses: ./.github/workflows/publish-release.yml
     secrets: inherit
     with:
-      elixir_version: 1.14.4
-      otp_version: 25.2.3
+      elixir_version: 1.18.4
+      otp_version: 27.3.4.3

.github/workflows/publish-docs.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-24.04
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: Setup Erlang & Elixir
       uses: erlef/setup-beam@v1

.github/workflows/publish-release.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-24.04
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         fetch-depth: 0
 

.tool-versions

@@ -1,2 +1,2 @@
-elixir 1.17.3-otp-27
-erlang 27.1.1
+elixir 1.19.0-rc.2-otp-28
+erlang 28.1