pw_presubmit: Don't check svg for copyright header

Ignores .svg files in the copyright header check.

No-Docs-Update-Reason: Filename ignore pattern addition.
Change-Id: Ibbc90e7ca8af52cb7e9ea78cdff62f7c66f4cae2
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/42600
Commit-Queue: Armando Montanez <amontanez@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
diff --git a/pw_presubmit/py/pw_presubmit/pigweed_presubmit.py b/pw_presubmit/py/pw_presubmit/pigweed_presubmit.py
index 75cd910..7828178 100755
--- a/pw_presubmit/py/pw_presubmit/pigweed_presubmit.py
+++ b/pw_presubmit/py/pw_presubmit/pigweed_presubmit.py
@@ -362,6 +362,7 @@
     r'\.jpg$',
     r'\.json$',
     r'\.png$',
+    r'\.svg$',
     # Documentation
     r'\.md$',
     r'\.rst$',