More dependency upgrades for debian (#5421)

* upgrade insta, rand, sha2, strum, thiserror, tokio-tungstenite, toml, which; drop unused semver and typetag

* upgrade sysinfo to 0.39.5, bump toolchain (msrv) to 1.95.0

* remote legacy yaml config converter and thus drop serde_yaml

* upgrade unicode-width to 0.2.2

* fix(tests): run ipc roundtrip test on a larger stack

xtask/Cargo.toml

@@ -8,8 +8,8 @@ edition.workspace = true
 anyhow = { workspace = true }
 serde_json = { workspace = true }
 prost-build = { version = "0.12.6", default-features = false }
-toml = { version = "0.5", default-features = false }
-which = { version = "4.2", default-features = false }
+toml = { version = "1.1.2", default-features = false, features = ["parse", "serde", "std"] }
+which = "8"
 xflags = { version = "0.3.2", default-features = false }
 # TODO(hartan): Update this once we get a new release. See:
 #   <https://github.com/matklad/xshell/issues/63>

xtask/src/pipelines.rs

@@ -268,7 +268,7 @@ pub fn publish(sh: &Shell, flags: flags::Publish) -> anyhow::Result<()> {
     let manifest = sh
         .read_file(project_dir.join("Cargo.toml"))
         .context(err_context)?
-        .parse::<toml::Value>()
+        .parse::<toml::Table>()
         .context(err_context)?;
     // Version of the core crate
     let version = manifest