Add changeset

Author: sachindshinde

.changeset/many-rings-glow.md

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+---
+"@apollo/query-planner": patch
+"@apollo/query-graphs": patch
+---
+
+Fixes a bug where query planning may unexpectedly error due to attempting to generate a plan where a `@shareable` mutation field is called more than once across multiple subgraphs. ([#3304](https://github.com/apollographql/federation/pull/3304))