Bump reqwest from 0.11.4 to 0.11.5 in /src/proxy-manager (#1336)

Bumps [reqwest](https://github.com/seanmonstar/reqwest) from 0.11.4 to 0.11.5.
- [Release notes](https://github.com/seanmonstar/reqwest/releases)
- [Changelog](https://github.com/seanmonstar/reqwest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/seanmonstar/reqwest/compare/v0.11.4...v0.11.5)

---
updated-dependencies:
- dependency-name: reqwest
  dependency-type: direct:production
  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>

src/proxy-manager/Cargo.lock

@@ -1002,9 +1002,9 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.11.4"
+version = "0.11.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "246e9f61b9bb77df069a947682be06e31ac43ea37862e244a69f177694ea6d22"
+checksum = "51c732d463dd300362ffb44b7b125f299c23d2990411a4253824630ebc7467fb"
 dependencies = [
  "base64",
  "bytes 1.1.0",
@@ -1600,8 +1600,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "632f73e236b219150ea279196e54e610f5dbafa5d61786303d4da54f84e47fce"
 dependencies = [
  "cfg-if",
- "serde",
- "serde_json",
  "wasm-bindgen-macro",
 ]