Update ubuntu version

Author: TheRustyPickle

dist-workspace.toml

@@ -13,3 +13,6 @@ installers = []
 targets = ["aarch64-apple-darwin", "x86_64-apple-darwin", "x86_64-unknown-linux-gnu", "x86_64-pc-windows-msvc"]
 # Whether cargo-dist should create a Github Release or use an existing draft
 create-release = false
+
+[workspace.metadata.dist.github-custom-runners]
+x86_64-unknown-linux-gnu = "ubuntu-22.04"