Drop Python 3.7 support

Python 3.7 is EOL since 27 June 2023.
Minimal supported Python version is now 3.8.

.github/workflows/compatibility.yml

@@ -2,16 +2,12 @@ name: Python Compatibility
 on: [push, pull_request, workflow_dispatch]
 
 jobs: 
-  test-py37-py38:
+  test-py38:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         include:
-          - python-version: "3.7"
-            python-include: "python3.7"
-            tox-env: "py37"
-            allow_failure: false
           - python-version: "3.8"
             python-include: "python3.8"
             tox-env: "py38"

pyproject.toml

@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 name = "flow.record"
 description = "A library for defining and creating structured data (called records) that can be streamed to disk or piped to other tools that use flow.record"
 readme = "README.md"
-requires-python = "~=3.7"
+requires-python = "~=3.8"
 license.text = "Affero General Public License v3"
 authors = [
   {name = "Dissect Team", email = "dissect@fox-it.com"}

tox.ini

@@ -49,7 +49,7 @@ deps =
     vermin
 commands =
     flake8 flow tests
-    vermin -t=3.7- --no-tips --lint --exclude zoneinfo flow tests
+    vermin -t=3.8- --no-tips --lint --exclude zoneinfo flow tests
 
 [flake8]
 max-line-length = 120