remove hyperscan_v4 test

Author: flier

.github/workflows/docker.yml

@@ -19,23 +19,18 @@ jobs:
           - ubuntu_version: 22.04
             hyperscan_version: 5.4.2
             pcre_version: 8.45
-            go_version: 1.20.3
+            go_version: 1.23.3
             build_flags: -tags hyperscan_v54,chimera
-          - ubuntu_version: 20.04
+          - ubuntu_version: 22.04
             hyperscan_version: 5.2.1
             pcre_version: 8.45
-            go_version: 1.19.8
+            go_version: 1.22.9
             build_flags: -tags hyperscan_v52,chimera
           - ubuntu_version: 20.04
             hyperscan_version: 5.1.1
-            pcre_version: 8.45
+            pcre_version: 8.41
             build_flags: -tags chimera
-            go_version: 1.18.10
-          - ubuntu_version: 18.04
-            hyperscan_version: 4.7.0
-            pcre_version: 8.42
-            go_version: 1.18.10
-            build_flags: -tags hyperscan_v4
+            go_version: 1.21.13
     name: tests @ ubuntu ${{ matrix.ubuntu_version }} for hyperscan ${{ matrix.hyperscan_version }} w/ ${{ matrix.build_flags }}
     env:
       LATEST_TAG: flier/gohs:${{ matrix.hyperscan_version }}