Use Rust 1.95 consistently throughout the workspace

crates/ferese-config/Cargo.toml

@@ -3,7 +3,7 @@ name = "ferese-config"
 version.workspace = true
 edition.workspace = true
 license.workspace = true
-rust-version = "1.95"
+rust-version.workspace = true
 
 [dependencies]
 jiff.workspace = true

crates/ferese-theme/Cargo.toml

@@ -3,7 +3,7 @@ name = "ferese-theme"
 version.workspace = true
 edition.workspace = true
 license.workspace = true
-rust-version = "1.95"
+rust-version.workspace = true
 
 [dependencies]
 jiff.workspace = true