chore(deps): regenerate minimal lockfiles with direct_minimal_versions

The minimal lockfiles were previously regenerated without
'-S direct_minimal_versions', so direct dependencies were locked
to highest-compatible versions instead of lowest. That defeats the
point of the test_min_deps CI job, which exists to verify the
declared lower bounds in pyproject.toml still work.

Re-locked both pdm.minimal.lock files using:
    pdm lock -S direct_minimal_versions -L pdm.minimal.lock

Strategy marker confirmed as
["direct_minimal_versions", "inherit_metadata"] in the metadata
of both files. python-dateutil is absent (this branch's main change).

Author: splch

integration-tests/pdm.minimal.lock

@@ -40,13 +40,13 @@ files = [
 
 [[package]]
 name = "certifi"
-version = "2026.4.22"
+version = "2026.5.20"
 requires_python = ">=3.7"
 summary = "Python package for providing Mozilla's CA Bundle."
 groups = ["default"]
 files = [
-    {file = "certifi-2026.4.22-py3-none-any.whl", hash = "sha256:3cb2210c8f88ba2318d29b0388d1023c8492ff72ecdde4ebdaddbb13a31b1c4a"},
-    {file = "certifi-2026.4.22.tar.gz", hash = "sha256:8d455352a37b71bf76a79caa83a3d6c25afee4a385d632127b6afb3963f1c580"},
+    {file = "certifi-2026.5.20-py3-none-any.whl", hash = "sha256:3c52e209ba0a4ad7aebe60436a4ab349c39e1e602e8c134221e546902ad25897"},
+    {file = "certifi-2026.5.20.tar.gz", hash = "sha256:69dea482ab64caa7b9f6aba1c6bf48bb6a5448d1c0f1b17ab42ad8c763a5344d"},
 ]
 
 [[package]]
@@ -123,13 +123,13 @@ files = [
 
 [[package]]
 name = "idna"
-version = "3.13"
-requires_python = ">=3.8"
+version = "3.16"
+requires_python = ">=3.9"
 summary = "Internationalized Domain Names in Applications (IDNA)"
 groups = ["default"]
 files = [
-    {file = "idna-3.13-py3-none-any.whl", hash = "sha256:892ea0cde124a99ce773decba204c5552b69c3c67ffd5f232eb7696135bc8bb3"},
-    {file = "idna-3.13.tar.gz", hash = "sha256:585ea8fe5d69b9181ec1afba340451fba6ba764af97026f92a91d4eef164a242"},
+    {file = "idna-3.16-py3-none-any.whl", hash = "sha256:cc246e3a3f89580c3a951b5ad298ca4638078b2cdd4f115654332b5c26daded5"},
+    {file = "idna-3.16.tar.gz", hash = "sha256:d7a6da03db833450fca25d2358ac9ff06cd624577a4aea3a596d5c0f77b8e03d"},
 ]
 
 [[package]]
@@ -192,13 +192,13 @@ files = [
 
 [[package]]
 name = "packaging"
-version = "26.1"
+version = "26.2"
 requires_python = ">=3.8"
 summary = "Core utilities for Python packages"
 groups = ["dev"]
 files = [
-    {file = "packaging-26.1-py3-none-any.whl", hash = "sha256:5d9c0669c6285e491e0ced2eee587eaf67b670d94a19e94e3984a481aba6802f"},
-    {file = "packaging-26.1.tar.gz", hash = "sha256:f042152b681c4bfac5cae2742a55e103d27ab2ec0f3d88037136b6bfe7c9c5de"},
+    {file = "packaging-26.2-py3-none-any.whl", hash = "sha256:5fc45236b9446107ff2415ce77c807cee2862cb6fac22b8a73826d0693b0980e"},
+    {file = "packaging-26.2.tar.gz", hash = "sha256:ff452ff5a3e828ce110190feff1178bb1f2ea2281fa2075aadb987c2fb221661"},
 ]
 
 [[package]]