Fix CI checks

Signed-off-by: Gaurav Aggarwal <[email protected]>

Author: aggarg

.github/links_allowlist.txt

@@ -4,3 +4,4 @@ https://www.somewebsite.com/path/to/item.txt?optionalquery=stuff
 https://dummy-url.com/ota.bin
 file://template.json
 file://policy.json
+https://www.gnu.org/software/complexity/manual/complexity.html

.github/workflows/ci.yml

@@ -230,7 +230,7 @@ jobs:
       - name: Install Doxygen
         run: |
           wget -qO- "https://sourceforge.net/projects/doxygen/files/rel-1.9.6/doxygen-1.9.6.linux.bin.tar.gz/download" | sudo tar --strip-components=1 -xz -C /usr/local
-          sudo apt-get install -y libclang-11-dev libclang-cpp11 graphviz
+          sudo apt-get install -y libclang-18-dev libclang-cpp18 graphviz
       - name: Install Python3
         uses: actions/setup-python@v2
         with: