GGP-0026: Updated Feature Matrix Support (Graph Node v0.31.0)

Description

This GGP includes a proposed updated Feature Support Matrix, including the new Graph Node release 0.31.0, whose release notes are here. This is an update to the previously ratified matrix in GGP-0023.

As with every new release, no POI divergences have been found after syncing ~100 subgraphs and comparing them against the previously ratified version.

Next steps

This PR will be closed pending approval. Afterward, mainnet Indexers will be encouraged to upgrade Graph Node.

Feature Support Matrix

This defines indexing & querying features that are experimental or not fully supported for indexing & query rewards and arbitration (more information can be found in GIP-008).

graph-node: ≥0.31.0 <0.32.0 valid from: 874 upgrade window: 890