Add changeset

Author: jerelmiller

.changeset/eighty-squids-fix.md

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+---
+"@apollo/client": major
+---
+
+Make `ObservableQuery.reobserve` a private API. As a result, `reobserve` has been removed from `useQuery` as well. Instead prefer to use `ObservableQuery.setOptions(newOptions)` to reevaluate the query against a new set of options.
+
+`ObservableQuery.rerun` has been introduced to reevaluate the query against the current set of options. If you previously used `reobserve` with no arguments, use `rerun` instead.
+
+```diff
+const observable = client.watchQuery(options);
+
+// Use setOptions to set new options and reevaluate the query
+- observable.reobserve(newOptions);
++ observable.setOptions(newOptions);
+
+// Use rerun to reevaluate the query against the current set of options
+- observable.reobserve();
++ observable.rerun();
+```