Update proc-macro2 requirement from =1.0.84 to =1.0.85 (#5838)
Updates the requirements on [proc-macro2](https://github.com/dtolnay/proc-macro2) to permit the latest version.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](https://github.com/dtolnay/proc-macro2/compare/1.0.84...1.0.85)
---
updated-dependencies:
- dependency-name: proc-macro2
dependency-type: direct:production
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/arrow-flight/gen/Cargo.toml b/arrow-flight/gen/Cargo.toml
index c4bbf4b..8c4587c 100644
--- a/arrow-flight/gen/Cargo.toml
+++ b/arrow-flight/gen/Cargo.toml
@@ -32,6 +32,6 @@
[dependencies]
# Pin specific version of the tonic-build dependencies to avoid auto-generated
# (and checked in) arrow.flight.protocol.rs from changing
-proc-macro2 = { version = "=1.0.84", default-features = false }
+proc-macro2 = { version = "=1.0.85", default-features = false }
prost-build = { version = "=0.12.6", default-features = false }
tonic-build = { version = "=0.11.0", default-features = false, features = ["transport", "prost"] }
