fix: fix backport remidners

[krzysztofczyz-da]

Types commented out because of lint issue:

.github/workflows/backport_reminder.yml:14:17: could not parse action metadata in "/Users/kczyz/Documents/GitHub/splice/gha-scripts/actions/backport_reminder": line 4: unexpected key "type" for definition of input "lookup_prod_cluster_configs" [action]
   |
14 |         - uses: ./gha-scripts/actions/backport_reminder
   |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.github/workflows/do_backports.yml:16:15: could not parse action metadata in "/Users/kczyz/Documents/GitHub/splice/gha-scripts/actions/parse_backport_comments": line 4: unexpected key "type" for definition of input "pr_number" [action]
   |
16 |       - uses: ./gha-scripts/actions/parse_backport_comments
   |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[moritzkiefer-da]

thx