Bump ubuntu from 1b8d8ff to 6d7b5d3

Bumps ubuntu from `1b8d8ff` to `6d7b5d3`.

---
updated-dependencies:
- dependency-name: ubuntu
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:22.04@sha256:1b8d8ff4777f36f19bfe73ee4df61e3a0b789caeff29caa019539ec7c9a57f95
+FROM ubuntu:22.04@sha256:6d7b5d3317a71adb5e175640150e44b8b9a9401a7dd394f44840626aff9fa94d
 
 LABEL maintainer="Antrea <projectantrea-dev@googlegroups.com>"
 LABEL description="A Docker-based Github action to determine if changes were made outside of a provided path exclusion list."