Bump dropshot from `7622dc0` to `64f3a3b` (#524)

Bumps [dropshot](https://github.com/oxidecomputer/dropshot) from `7622dc0` to `64f3a3b`.
- [Commits](7622dc0eac...64f3a3ba96)

---
updated-dependencies:
- dependency-name: dropshot
  dependency-type: direct:production
...

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

Cargo.lock

@@ -455,7 +455,7 @@ dependencies = [
 [[package]]
 name = "dropshot"
 version = "0.9.1-dev"
-source = "git+https://github.com/oxidecomputer/dropshot#7622dc0eac7445e0b39b72140f22cdadca8276c4"
+source = "git+https://github.com/oxidecomputer/dropshot#64f3a3ba969802895e7a62ef08586d7789e54927"
 dependencies = [
  "async-stream",
  "async-trait",
@@ -499,7 +499,7 @@ dependencies = [
 [[package]]
 name = "dropshot_endpoint"
 version = "0.9.1-dev"
-source = "git+https://github.com/oxidecomputer/dropshot#7622dc0eac7445e0b39b72140f22cdadca8276c4"
+source = "git+https://github.com/oxidecomputer/dropshot#64f3a3ba969802895e7a62ef08586d7789e54927"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1631,9 +1631,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.21.3"
+version = "0.21.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b19faa85ecb5197342b54f987b142fb3e30d0c90da40f80ef4fa9a726e6676ed"
+checksum = "79ea77c539259495ce8ca47f53e66ae0330a8819f67e23ac96ca02f50e7b7d36"
 dependencies = [
  "log",
  "ring",
@@ -1833,10 +1833,11 @@ dependencies = [
 
 [[package]]
 name = "serde_path_to_error"
-version = "0.1.11"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7f05c1d5476066defcdfacce1f52fc3cae3af1d3089727100c02ae92e5abbe0"
+checksum = "4beec8bce849d58d06238cb50db2e1c417cfeafa4c63f692b15c82b7c80f8335"
 dependencies = [
+ "itoa",
  "serde",
 ]