docs: mark me as shepherd for next release (#5797)

Let's release the RC on Friday.

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>
Signed-off-by: utukj <utukphd@gmail.com>

docs/release-process.md

@@ -24,7 +24,7 @@ Release shepherd responsibilities:
 | Release | Time of first RC     | Shepherd (GitHub handle)      |
 |---------|----------------------|-------------------------------|
 | v0.30.0 | (planned) 2022.11.21 | No one ATM                    |
-| v0.29.0 | (planned) 2022.09.29 | No one ATM                    |
+| v0.29.0 | 2022.10.21           | `@GiedriusS`                  |
 | v0.28.0 | 2022.08.22           | `@yeya24`                     |
 | v0.27.0 | 2022.06.21           | `@wiardvanrij` and `@matej-g` |
 | v0.26.0 | 2022.04.29           | `@wiardvanrij`                |