pre-commit: Bump versions

We also manually remove the 'default_language_version' section: all
reasonable environments will use Python 3 by default nowadays.

Change-Id: Ifc063e69afdf41ca9aef18db686f0e9a6504ea5e
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

.pre-commit-config.yaml

@@ -1,10 +1,7 @@
 ---
-default_language_version:
-  # force all unspecified python hooks to run python3
-  python: python3
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.6.0
+    rev: v5.0.0
     hooks:
       - id: trailing-whitespace
       - id: mixed-line-ending
@@ -16,7 +13,7 @@ repos:
       - id: check-yaml
         files: .*\.(yaml|yml)$
   - repo: https://opendev.org/openstack/hacking
-    rev: 6.1.0
+    rev: 7.0.0
     hooks:
       - id: hacking
         additional_dependencies: []