feat(dependabot): add a regex group (#4245)

this groups our regex dependencies.

see #4243 and
#4242 for examples of
duplicate pull requests.

Signed-off-by: katelyn martin <[email protected]>

Author: cratelyn

.github/dependabot.yml

@@ -43,6 +43,10 @@ updates:
       opentelemetry:
         patterns:
           - "opentelemetry*"
+      regex:
+        patterns:
+          - "regex"
+          - "regex-*"
       rustls:
         patterns:
           - "tokio-rustls"