[Release] Wrong GitHub Actions context for workflow dispatch inputs

[kou]

Describe the bug, including details regarding any error messages, version, and platform.

arrow/.github/workflows/verify_rc.yml

Line 57 in e7f5b6f

tag="${{ input.rc_tag }}"

uses input but it must be inputs: https://docs.github.com/en/actions/reference/contexts-reference#inputs-context

Component(s)

Release

[kou]

Issue resolved by pull request 47068
#47068