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GH-43270: [Release] Fix input variables on post-01-tag.sh (#43271)

### Rationale for this change

Scripts is failing to be executed

### What changes are included in this PR?

Fixing the script

### Are these changes tested?

Locally during the release

### Are there any user-facing changes?

No
* GitHub Issue: #43270

Lead-authored-by: Raúl Cumplido <raulcumplido@gmail.com>
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>