Downgrade to elixir 1.18.4

Co-authored-by: Vinicius Negrisolo <vinicius.negrisolo@hashrocket.com>
Co-authored-by: Gabriel Reis <gabriel.reis@hashrocket.com>

Author: 3 people

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        elixir: [1.19.0]
+        elixir: [1.18.4]
         otp: [28.1]
     steps:
     - uses: actions/checkout@v3
@@ -61,7 +61,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        elixir: [1.19.0]
+        elixir: [1.18.4]
         otp: [28.1]
     services:
       postgres:
@@ -111,7 +111,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        elixir: [1.19.0]
+        elixir: [1.18.4]
         otp: [28.1]
     steps:
     - uses: actions/checkout@v3

.tool-versions

@@ -1,3 +1,3 @@
-elixir 1.19.0-otp-28
+elixir 1.18.4-otp-28
 erlang 28.1
 nodejs 19.0.0

elixir_buildpack.config

@@ -1,3 +1,3 @@
 config_vars_to_export=(BASIC_AUTH_PASSWORD BASIC_AUTH_USERNAME)
-elixir_version=1.19.0
+elixir_version=1.18.4
 erlang_version=28.1

openspec/project.md

@@ -13,7 +13,7 @@ Key characteristics:
 ## Tech Stack
 
 ### Backend
-- **Language**: Elixir 1.19.0 / Erlang OTP 28.1
+- **Language**: Elixir 1.18.4 / Erlang OTP 28.1
 - **Web Framework**: Phoenix ~> 1.6.14 with LiveView ~> 0.18
 - **Database**: PostgreSQL with Ecto ~> 3.6 ORM
 - **Authentication**: Ueberauth + Google OAuth 2.0, Guardian JWT tokens