Fix warnings in 1.20 and require Elixir 1.15+ (#718)

Author: sabiwara

lib/ecto/adapters/postgres/connection.ex

@@ -1991,7 +1991,7 @@ if Code.ensure_loaded?(Postgrex) do
 
     defp bitstring_literal(value) do
       size = bit_size(value)
-      <<val::size(size)>> = value
+      <<val::size(^size)>> = value
 
       [?b, ?', val |> Integer.to_string(2) |> String.pad_leading(size, ["0"]), ?']
     end

mix.exs

@@ -9,9 +9,10 @@ defmodule EctoSQL.MixProject do
     [
       app: :ecto_sql,
       version: @version,
-      elixir: "~> 1.14",
+      elixir: "~> 1.15",
       deps: deps(),
       test_paths: test_paths(System.get_env("ECTO_ADAPTER")),
+      test_ignore_filters: [&String.starts_with?(&1, "test/support/")],
       xref: [
         exclude: [
           MyXQL,
@@ -30,7 +31,6 @@ defmodule EctoSQL.MixProject do
         "test.adapters": &test_adapters/1,
         "test.as_a_dep": &test_as_a_dep/1
       ],
-      preferred_cli_env: ["test.all": :test, "test.adapters": :test],
 
       # Hex
       description: "SQL-based adapters for Ecto and database migrations",
@@ -50,6 +50,10 @@ defmodule EctoSQL.MixProject do
     ]
   end
 
+  def cli do
+    [preferred_envs: ["test.all": :test, "test.adapters": :test]]
+  end
+
   defp deps do
     [
       ecto_dep(),