Update ark-poly requirement from 0.4.2 to 0.5.0

Updates the requirements on [ark-poly](https://github.com/arkworks-rs/algebra) to permit the latest version.
- [Release notes](https://github.com/arkworks-rs/algebra/releases)
- [Changelog](https://github.com/arkworks-rs/algebra/blob/v0.5.0/CHANGELOG.md)
- [Commits](arkworks-rs/algebra@v0.4.2...v0.5.0)

---
updated-dependencies:
- dependency-name: ark-poly
  dependency-type: direct:production
...

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

fri/Cargo.toml

@@ -9,7 +9,7 @@ name = "fri-example"
 path = "examples/example.rs"
 
 [dependencies]
-ark-poly = "0.4.2"
+ark-poly = "0.5.0"
 ark-ff = "0.4.2"
 sha2 = "0.11.0-pre.3"
 rand = "0.8.5"

kzg/Cargo.toml

@@ -11,7 +11,7 @@ path = "examples/example.rs"
 
 [dependencies]
 ark-ff = "0.4.2"
-ark-poly = "0.4.2"
+ark-poly = "0.5.0"
 ark-ec = "0.4.2"
 ark-bls12-381 = "0.4.0"
 ark-serialize = "0.4.2"

plonk/Cargo.toml

@@ -11,7 +11,7 @@ path = "examples/example.rs"
 
 [dependencies]
 ark-ff = "0.4.2"
-ark-poly = "0.4.2"
+ark-poly = "0.5.0"
 ark-ec = "0.4.2"
 ark-bls12-381 = "0.4.0"
 ark-serialize = "0.4.2"