Update Debian group level endpoints urls

See https://gitlab.com/gitlab-org/gitlab/-/issues/326805

lib/api/debian_group_packages.rb

@@ -15,7 +15,7 @@ module API
         authorize_read_package!(user_group)
       end
 
-      namespace ':id/packages/debian' do
+      namespace ':id/-/packages/debian' do
         include DebianPackageEndpoints
       end
     end

spec/requests/api/debian_group_packages_spec.rb

@@ -6,32 +6,32 @@ RSpec.describe API::DebianGroupPackages do
   include WorkhorseHelpers
 
   include_context 'Debian repository shared context', :group do
-    describe 'GET groups/:id/packages/debian/dists/*distribution/Release.gpg' do
-      let(:url) { "/groups/#{group.id}/packages/debian/dists/#{distribution}/Release.gpg" }
+    describe 'GET groups/:id/-/packages/debian/dists/*distribution/Release.gpg' do
+      let(:url) { "/groups/#{group.id}/-/packages/debian/dists/#{distribution}/Release.gpg" }
 
       it_behaves_like 'Debian group repository GET endpoint', :not_found, nil
     end
 
-    describe 'GET groups/:id/packages/debian/dists/*distribution/Release' do
-      let(:url) { "/groups/#{group.id}/packages/debian/dists/#{distribution}/Release" }
+    describe 'GET groups/:id/-/packages/debian/dists/*distribution/Release' do
+      let(:url) { "/groups/#{group.id}/-/packages/debian/dists/#{distribution}/Release" }
 
       it_behaves_like 'Debian group repository GET endpoint', :success, 'TODO Release'
     end
 
-    describe 'GET groups/:id/packages/debian/dists/*distribution/InRelease' do
-      let(:url) { "/groups/#{group.id}/packages/debian/dists/#{distribution}/InRelease" }
+    describe 'GET groups/:id/-/packages/debian/dists/*distribution/InRelease' do
+      let(:url) { "/groups/#{group.id}/-/packages/debian/dists/#{distribution}/InRelease" }
 
       it_behaves_like 'Debian group repository GET endpoint', :not_found, nil
     end
 
-    describe 'GET groups/:id/packages/debian/dists/*distribution/:component/binary-:architecture/Packages' do
-      let(:url) { "/groups/#{group.id}/packages/debian/dists/#{distribution}/#{component}/binary-#{architecture}/Packages" }
+    describe 'GET groups/:id/-/packages/debian/dists/*distribution/:component/binary-:architecture/Packages' do
+      let(:url) { "/groups/#{group.id}/-/packages/debian/dists/#{distribution}/#{component}/binary-#{architecture}/Packages" }
 
       it_behaves_like 'Debian group repository GET endpoint', :success, 'TODO Packages'
     end
 
-    describe 'GET groups/:id/packages/debian/pool/:component/:letter/:source_package/:file_name' do
-      let(:url) { "/groups/#{group.id}/packages/debian/pool/#{component}/#{letter}/#{source_package}/#{package_name}_#{package_version}_#{architecture}.deb" }
+    describe 'GET groups/:id/-/packages/debian/pool/:component/:letter/:source_package/:file_name' do
+      let(:url) { "/groups/#{group.id}/-/packages/debian/pool/#{component}/#{letter}/#{source_package}/#{package_name}_#{package_version}_#{architecture}.deb" }
 
       it_behaves_like 'Debian group repository GET endpoint', :success, 'TODO File'
     end