github-ci: replace dist builder with Debian 12

Add new dist builder job based on Debian 12. Debian 12 gives us news
Sphinx that AlmaLinux 8, plus avoids any potential disruption in the
RHEL rebuild ecosystem.

Also make dist building its own job so it finishes quicker, allowing
other jobs to proceed.  The new non-dist building Debian 12 job will
still do a complete distcheck, as do other jobs.

.github/workflows/builds.yml

@@ -375,10 +375,8 @@ jobs:
         run: cargo clippy --all-features
         working-directory: rust
 
-  # AlmaLinux 8 builder and distribution archive builder that some
-  # other builds will depend on.
   almalinux-8:
-    name: AlmaLinux 8 (Dist builder)
+    name: AlmaLinux 8
     runs-on: ubuntu-latest
     container: almalinux:8
     needs: [prepare-deps, prepare-cbindgen]
@@ -498,21 +496,12 @@ jobs:
       - run: make install
       - run: suricatasc -h
       - run: suricata-update -V
-      - name: Preparing distribution
-        run: |
-          mkdir dist
-          mv suricata-*.tar.gz dist
-      - uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce
-        name: Uploading distribution
-        with:
-          name: dist
-          path: dist
 
   centos-7:
     name: CentOS 7
     runs-on: ubuntu-latest
     container: centos:7
-    needs: [prepare-deps, almalinux-8]
+    needs: [prepare-deps, debian-12-dist]
     steps:
       - name: Cache ~/.cargo
         uses: actions/cache@v3.3.1
@@ -2279,6 +2268,85 @@ jobs:
       - run: suricata-update -V
       - run: suricatasc -h
 
+  debian-12-dist:
+    name: Debian 12 Dist Builder
+    runs-on: ubuntu-latest
+    container: debian:12
+    needs: [prepare-deps]
+    steps:
+      # Cache Rust stuff.
+      - name: Cache cargo registry
+        uses: actions/cache@v3.3.1
+        with:
+          path: ~/.cargo
+          key: ${{ github.job }}-cargo
+
+      - run: apt update
+      - run: |
+          apt -y install \
+              autoconf \
+              automake \
+              build-essential \
+              cargo \
+              cbindgen \
+              cmake \
+              curl \
+              git \
+              jq \
+              make \
+              libpcre3 \
+              libpcre3-dbg \
+              libpcre3-dev \
+              libpcre2-dev \
+              libtool \
+              libpcap-dev \
+              libnet1-dev \
+              libyaml-0-2 \
+              libyaml-dev \
+              libcap-ng-dev \
+              libcap-ng0 \
+              libmagic-dev \
+              libjansson-dev \
+              libjansson4 \
+              libnss3-dev \
+              libnspr4-dev \
+              liblz4-dev \
+              libssl-dev \
+              liblzma-dev \
+              pkg-config \
+              python3 \
+              python3-yaml \
+              rustc \
+              sphinx-doc \
+              sphinx-common \
+              texlive-latex-base \
+              texlive-fonts-recommended \
+              texlive-fonts-extra \
+              texlive-latex-extra \
+              zlib1g \
+              zlib1g-dev
+      - uses: actions/checkout@v3.5.3
+      - uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a
+        with:
+          name: prep
+          path: prep
+      - run: tar xf prep/libhtp.tar.gz
+      - run: tar xf prep/suricata-update.tar.gz
+      - run: ./autogen.sh
+      - run: CFLAGS="${DEFAULT_CFLAGS}" ./configure
+      - run: make dist
+      - run: test -e doc/userguide/suricata.1
+      - run: test -e doc/userguide/userguide.pdf
+      - name: Preparing distribution
+        run: |
+          mkdir dist
+          mv suricata-*.tar.gz dist
+      - uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce
+        name: Uploading distribution
+        with:
+          name: dist
+          path: dist
+
   debian-11:
     name: Debian 11 (xdp)
     runs-on: ubuntu-latest