force usage of pkgcore HEAD to ensure testing of recent restriction changes

The restriction subsystem got ABC and a new weakref caching implementation;
whilst it's been tested for pkgcheck, we need to be testing against latest
to ensure no surprises.

Additionally, remove the explicit snakeoil dep.  Yes, we use snakeoil
on our own, but we're using what pkgcore uses.

If- and when- we are using something pkcore doesn't actually required,
re-add it.

This is not strictly 'correct', but it also makes life less annoying,
so devex trumps academic correctness.

Signed-off-by: Brian Harring <ferringb@gmail.com>

Author: ferringb

pyproject.toml

@@ -7,8 +7,7 @@ requires = [
 	"pathspec",
 	"tree-sitter~=0.25.0",
 	"tree-sitter-bash~=0.23.1",
-	"snakeoil~=0.11.0",
-	"pkgcore~=0.12.31",
+	"pkgcore@git+https://github.com/pkgcore/pkgcore.git#master",
 ]
 build-backend = "py_build"
 backend-path = ["."]
@@ -45,8 +44,7 @@ dependencies = [
 	"pathspec",
 	"tree-sitter~=0.25.0",
 	"tree-sitter-bash~=0.23.1",
-	"snakeoil~=0.11.0",
-	"pkgcore~=0.12.31",
+	"pkgcore@git+https://github.com/pkgcore/pkgcore.git#master",
 ]
 
 [project.optional-dependencies]