Bump pollster from 0.3.0 to 0.4.0

Bumps [pollster](https://github.com/zesterer/pollster) from 0.3.0 to 0.4.0.
- [Changelog](https://github.com/zesterer/pollster/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zesterer/pollster/commits)

---
updated-dependencies:
- dependency-name: pollster
  dependency-version: 0.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -17,7 +17,7 @@ naga = { version = "=26.0.0", optional = true, default-features = false, feature
 rand = "=0.8.5"
 obj-rs = "=0.7.0"
 wgpu = { version = "=26.0.1", optional = true, features = ["wgsl", "spirv"] }
-pollster = { version = "=0.3.0", optional = true }
+pollster = { version = "=0.4.0", optional = true }
 lambda-rs-logging = { path = "../lambda-rs-logging", version = "2023.1.30" }
 
 [dev-dependencies]