build(deps): bump proc-macro2 from 1.0.91 to 1.0.92 (linkerd#3384)

Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.91 to 1.0.92.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](dtolnay/proc-macro2@1.0.91...1.0.92)

---
updated-dependencies:
- dependency-name: proc-macro2
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -3064,9 +3064,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.91"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "307e3004becf10f5a6e0d59d20f3cd28231b0e0827a96cd3e0ce6d14bc1e4bb3"
+checksum = "37d3544b3f2748c54e147655edb5025752e2303145b5aefb3c3ea2c78b973bb0"
 dependencies = [
  "unicode-ident",
 ]