Update to the latest KLayout version.

Signed-off-by: Tim 'mithro' Ansell <tansell@google.com>

.github/workflows/Tests.yml

diff --git a/.github/workflows/Tests.yml b/.github/workflows/Tests.yml
index d64a823..7a7d78f 100644
--- a/.github/workflows/Tests.yml
+++ b/.github/workflows/Tests.yml
@@ -63,8 +63,8 @@
             qtmultimedia5-dev \
             libqt5multimediawidgets5 \
             libqt5svg5-dev
-          wget https://www.klayout.org/downloads/Ubuntu-20/klayout_0.27.10-1_amd64.deb
-          sudo dpkg -i ./klayout_0.27.10-1_amd64.deb
+          wget https://www.klayout.org/downloads/Ubuntu-22/klayout_0.28.2-1_amd64.deb
+          sudo dpkg -i ./klayout_0.28.2-1_amd64.deb
           sudo apt install -f -y
 
       - uses: actions/checkout@v3