test: disable unit tests

Signed-off-by: Charlotte Meyer <dev@buffet.sh>

crates/oyster_builtin_proc/Cargo.toml

@@ -7,6 +7,7 @@ license.workspace = true
 [lib]
 doctest = false
 proc-macro = true
+test = false
 
 [dependencies]
 darling = "~0.14.1"

crates/oyster_lineedit/Cargo.toml

@@ -6,3 +6,4 @@ license.workspace = true
 
 [lib]
 doctest = false
+test = false

crates/oyster_parser/Cargo.toml

@@ -6,6 +6,7 @@ license.workspace = true
 
 [lib]
 doctest = false
+test = false
 
 [dependencies]
 thiserror = "^1.0.35"

crates/oyster_runtime/Cargo.toml

@@ -6,6 +6,7 @@ license.workspace = true
 
 [lib]
 doctest = false
+test = false
 
 [dependencies]
 oyster_builtin_proc = { version = "0.0.0", path = "../oyster_builtin_proc" }