ci: test nginx 1.22

Packaged in Debian 12 (bookworm).

Author: bavshin-f5

.github/workflows/nginx.yaml

@@ -73,7 +73,8 @@ jobs:
           - static
           - dynamic
         include:
-          - nginx-ref: stable-1.24
+          # minimal supported nginx version (Debian bookworm: 1.22.1)
+          - nginx-ref: stable-1.22
             module: dynamic
 
     steps:
@@ -108,7 +109,7 @@ jobs:
           restore-keys: ${{ runner.os }}-nginx-
 
       - name: Update configure arguments
-        if: matrix.nginx-ref != 'stable-1.24'
+        if: matrix.nginx-ref != 'stable-1.22'
         run: |
             echo NGX_CONFIGURE_UNIX="${NGX_CONFIGURE_UNIX} --with-http_v3_module" \
                 >> "$GITHUB_ENV"