CI: add PHP 8.4, update libdeflate to 1.23

Author: dktapps

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        php: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
+        php: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
 
     steps:
       - uses: actions/checkout@v3
@@ -24,7 +24,7 @@ jobs:
 
       - name: Build libdeflate
         run: |
-           git clone --depth=1 https://github.com/ebiggers/libdeflate.git -b v1.19
+           git clone --depth=1 https://github.com/ebiggers/libdeflate.git -b v1.23
            cd libdeflate
            cmake . -DCMAKE_PREFIX_PATH=. -DCMAKE_INSTALL_PREFIX=.
            make install