Use "current" copyright-end-year in the strict style check

.github/workflows/check-style-strict.yml

@@ -14,6 +14,5 @@ jobs:
         cache: 'pip'
         cache-dependency-path: '.github/workflows/style-requirements.txt'
     - run: python -m pip install -r .github/workflows/style-requirements.txt
-    - run: |
-        # Report on out-of-date copyright years.
-        python -m flake8 --select H102 .
+    - name: Report on out-of-date copyright end years
+      run: python -m flake8 --select H102 --copyright-end-year current .

.github/workflows/style-requirements.txt

@@ -1,2 +1,2 @@
 flake8
-flake8-ets
+flake8-ets >= 1.1.0

etstool.py

@@ -94,11 +94,6 @@
 #: Default Python version to use.
 DEFAULT_RUNTIME = "3.8"
 
-#: Copyright end year expected by the merge-blocking style check. We hard-code
-#: this (rather than using the current year) to give us a buffer on CI failures
-#: when January 1st rolls around.
-EXPECTED_COPYRIGHT_END_YEAR = 2026
-
 
 def edm_dependencies(runtime):
     """
@@ -318,7 +313,6 @@ def flake8(edm, runtime, environment):
     ]
     commands = [
         "{edm} run -e {environment} -- python -m flake8 "
-        f"--copyright-end-year {EXPECTED_COPYRIGHT_END_YEAR} "
         + " ".join(targets)
     ]
     execute(commands, parameters)

setup.cfg

@@ -1,5 +1,7 @@
 [flake8]
 ignore = E266, W503
+# Pin the year so style checks don't fail when the year rolls over.
+copyright-end-year = 2026
 per-file-ignores = 
     */api.py:F401,
     */__init__.py:F401,