Update doxygen_gh_pages.yaml

Use Doxygen 1.9.4

Author: zhi-wang

.github/workflows/doxygen_gh_pages.yaml

@@ -12,14 +12,17 @@ jobs:
            with:
               fetch-depth: 1
          - name: Install doxygen
+#            run: sudo apt-get install -y doxygen
            run: |
-              sudo apt-get install -y doxygen
+              wget https://www.doxygen.nl/files/doxygen-1.9.4.linux.bin.tar.gz
+              tar -xvzf doxygen-1.9.4.linux.bin.tar.gz
+              ln -s doxygen-1.9.4/bin/doxygen doxygen
          - name: Generate doxygen html
            run: |
               mkdir build
               cd build
               wget https://raw.githubusercontent.com/jothepro/doxygen-awesome-css/main/doxygen-awesome.css
-              ENV_GIT_HEAD=`git log -1 --format="%h (%cd)" | tr -d "\n"` doxygen ../doc/Doxyfile
+              ENV_GIT_HEAD=`git log -1 --format="%h (%cd)" | tr -d "\n"` ../doxygen ../doc/Doxyfile
               mkdir -p html/doc
               cp -r ../doc/manual html/doc/
          - name: Deploy