add changesets

Signed-off-by: Aramis Sennyey <159921952+aramissennyeydd@users.noreply.github.com>

.changeset/chatty-crabs-tap.md

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+---
+'@backstage/repo-tools': minor
+---
+
+Adds a lint rule to `repo schema openapi lint` to enforce `allowReserved: true`.

.changeset/lucky-comics-hang.md

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+---
+'@backstage/plugin-search-backend': patch
+'@backstage/plugin-todo-backend': patch
+---
+
+Allow reserved characters in requests.