cargo: bump bitflags from 1.2.1 to 1.3.1

Bumps [bitflags](https://github.com/bitflags/bitflags) from 1.2.1 to 1.3.1.
- [Release notes](https://github.com/bitflags/bitflags/releases)
- [Changelog](https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md)
- [Commits](https://github.com/bitflags/bitflags/compare/1.2.1...1.3.1)

---
updated-dependencies:
- dependency-name: bitflags
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -518,9 +518,9 @@ checksum = "46afbd2983a5d5a7bd740ccb198caf5b82f45c40c09c0eed36052d91cb92e719"
 
 [[package]]
 name = "bitflags"
-version = "1.2.1"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+checksum = "2da1976d75adbe5fbc88130ecd119529cf1cc6a93ae1546d8696ee66f0d21af1"
 
 [[package]]
 name = "block-buffer"

Cargo.toml

@@ -25,7 +25,7 @@ async-tar = "0.3.0"
 async-trait = "0.1.50"
 backtrace = "0.3.59"
 base64 = "0.13"
-bitflags = "1.1.0"
+bitflags = "1.3.1"
 byteorder = "1.3.1"
 chrono = "0.4.6"
 dirs = { version = "3.0.2", optional=true }