Add geo-parquet publishing instructions (#8690)

# Which issue does this PR close?

- part of #7835 

# Rationale for this change

We added a new crate so let's add that to the instructions too
# What changes are included in this PR?


# Are these changes tested?

# Are there any user-facing changes?

Author: alamb

dev/release/README.md

@@ -260,6 +260,7 @@ Rust Arrow Crates:
 (cd parquet-variant && cargo publish)
 (cd parquet-variant-json && cargo publish)
 (cd parquet-variant-compute && cargo publish)
+(cd parquet-geospatial && cargo publish)
 (cd parquet && cargo publish)
 (cd parquet_derive && cargo publish)
 (cd arrow-integration-test && cargo publish)