pre-commit autoupdate

Run `pre-commit autoupdate`.

This picks up a fresh Black version from 2025, and with it comes a small
but welcome formatting change.

There is a new version of isort as well, but no formatting change there.

Change-Id: Ie654a9c14c3a4096893011082668efb57c166fa4

.pre-commit-config.yaml

@@ -39,7 +39,7 @@
 
 repos:
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 24.8.0
+    rev: 25.1.0
     hooks:
       - id: black
         types_or: [file]
@@ -54,7 +54,7 @@ repos:
       files: 'gdb/python/.*\.py(\.in)?$'
       args: [--config, gdb/setup.cfg]
   - repo: https://github.com/pycqa/isort
-    rev: 5.13.2
+    rev: 6.0.0
     hooks:
     - id: isort
       types_or: [file]

gdb/python/lib/gdb/prompt.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-""" Extended prompt library functions."""
+"""Extended prompt library functions."""
 
 import os