Bump fedora from 37 to 38 in /.ci/docker-ci/fedora (#990)

Bumps fedora from 37 to 38.

---
updated-dependencies:
- dependency-name: fedora
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.ci/docker-ci/fedora/Dockerfile

@@ -1,4 +1,4 @@
-FROM fedora:37
+FROM fedora:38
 
 LABEL maintainer="mail@sobolevn.me"
 LABEL vendor="git-secret team"