add ejahnGithub as rekor-search-ui maintainer

[bdehamer]

Adds @ejahnGithub as a maintainer for the rekor-search-ui project. Currently, bdehamer is the only maintainer for this project.

[github-actions]

🍹 preview on sigstore-github-sync/sigstore/github-prod

Pulumi report

  Previewing update (sigstore/github-prod)

View Live: https://app.pulumi.com/sigstore/sigstore-github-sync/github-prod/previews/6311a795-b3ba-4dd5-920a-cccd6c620729

@ Previewing update.....
pulumi:pulumi:Stack: (same)
  [urn=urn:pulumi:github-prod::sigstore-github-sync::pulumi:pulumi:Stack::sigstore-github-sync-github-prod]
  + github:index/teamMembership:TeamMembership: (create)
      [urn=urn:pulumi:github-prod::sigstore-github-sync::github:index/teamMembership:TeamMembership::ejahnGithub-codeowners-rekor-search-ui]
      [provider=urn:pulumi:github-prod::sigstore-github-sync::pulumi:providers:github::default_6_4_0::fd0c3870-4738-41c2-aa92-62d1ff1cb3c0]
      role      : "maintainer"
      teamId    : "7667762"
      username  : "ejahnGithub"
@ Previewing update....
Resources:
  + 1 to create
  593 unchanged