Update pre-commit exclusions

Author: allenporter

.pre-commit-config.yaml

@@ -4,7 +4,7 @@ repos:
     rev: v4.6.0
     hooks:
       - id: trailing-whitespace
-        exclude: 'tests/testdata/.*yaml$'
+        exclude: '^tests/testdata/.*yaml$'
       - id: end-of-file-fixer
       - id: check-yaml
       - id: check-added-large-files
@@ -32,8 +32,7 @@ repos:
     hooks:
       - id: codespell
         exclude: |
-
-          (?x)^(
+          ^(
               tests/tzif/testdata/rfc8536-v3.yaml
           )$
   - repo: https://github.com/adrienverge/yamllint.git