Drop support for Python 3.8 (#165)

.changes/unreleased/Breaking Changes-20241017-172848.yaml

@@ -0,0 +1,6 @@
+kind: Breaking Changes
+body: Drop support for Python 3.8
+time: 2024-10-17T17:28:48.169961-04:00
+custom:
+  Author: mikealfare
+  Issue: "161"

.github/workflows/integration-tests.yml

@@ -50,7 +50,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11"]
 
     services:
       postgres:
@@ -107,7 +107,7 @@ jobs:
       fail-fast: false
       matrix:
         platform: [ubuntu-22.04, macos-12]
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.9", "3.11"]
     steps:
       - name: "Check out repository"
         uses: actions/checkout@v4

.github/workflows/unit-tests.yml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11"]
 
     steps:
       - name: Check out repository

.pre-commit-config.yaml

@@ -23,7 +23,6 @@ repos:
     -   id: black
         args:
         -   --line-length=99
-        -   --target-version=py38
         -   --target-version=py39
         -   --target-version=py310
         -   --target-version=py311

pyproject.toml

@@ -4,7 +4,7 @@ name = "dbt-postgres"
 description = "The set of adapter protocols and base functionality that supports integration with dbt-core"
 readme = "README.md"
 keywords = ["dbt", "adapter", "adapters", "database", "elt", "dbt-core", "dbt Core", "dbt Cloud", "dbt Labs", "postgres"]
-requires-python = ">=3.8.0"
+requires-python = ">=3.9.0"
 authors = [
     { name = "dbt Labs", email = "[email protected]" },
 ]
@@ -17,7 +17,6 @@ classifiers = [
     "Operating System :: MacOS :: MacOS X",
     "Operating System :: Microsoft :: Windows",
     "Operating System :: POSIX :: Linux",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -56,8 +55,7 @@ path = "dbt/adapters/postgres/__version__.py"
 dependencies = [
     "dbt-adapters @ git+https://github.com/dbt-labs/dbt-adapters.git",
     "dbt-common @ git+https://github.com/dbt-labs/dbt-common.git",
-    'pre-commit==3.7.0;python_version>="3.9"',
-    'pre-commit==3.5.0;python_version=="3.8"',
+    "pre-commit==3.7.0",
 ]
 [tool.hatch.envs.default.scripts]
 dev = "pre-commit install"