add some missing images (#181)

Signed-off-by: Weston Steimel <author@code.w.steimel.me.uk>

Author: westonsteimel

.yardstick.yaml

@@ -47,6 +47,7 @@ x-ref:
     - docker.io/anchore/test_images:vulnerabilities-no-distro-6bde59e@sha256:347fba6fbfa15d4e11217f9d49bf70a5a6eef35c6c642dc8c5db89115912d0c1
     - docker.io/anchore/test_images:syft_bin-cf22714@sha256:c27b02c6322180fd8a7a3097d2b430bfdf9ea52ecf136edf258458e82f2c6f21
     - docker.io/anchore/test_images:alpine-package-cpe-vuln-match-bd0aaef@sha256:0825acea611c7c5cc792bc7cc20de44d7413fd287dc5afc4aab9c1891d037b4f
+    - docker.io/anchore/test_images:almalinux8-271722c@sha256:6485db654df0452bd15ea71ec43e808bc8eb05b91f1c2754669a5573479a6c19
     - docker.io/alpine:3.2@sha256:ddac200f3ebc9902fb8cfcd599f41feb2151f1118929da21bcef57dc276975f9
     - docker.io/centos:6@sha256:3688aa867eb84332460e172b9250c9c198fdfd8d987605fd53f246f498c60bcf
     - docker.io/almalinux:8@sha256:cd49d7250ed7bb194d502d8a3e50bd775055ca275d1d9c2785aea72b890afe6a
@@ -109,6 +110,10 @@ x-ref:
     # postmarketos
     - ghcr.io/anchore/test-images/postmarketos:edge@sha256:2bdab220693cecfe3474055076bcbfe9ec8faf466867a5db3e0b76afaa9f4b89
     - ghcr.io/anchore/test-images/postmarketos:24.06@sha256:05b42fdb332f8a5794c9d1e6ab83cd32030bf0cd3ef797ada5546419e9ad293d
+    # secureos
+    - registry.replicated.com/library/grype-test:20250106@sha256:3339bcd874d21fa3ca5bd20636e793c0c33bd71ace3a18a9a3b3d147b91dd000
+    # arch linux
+    - docker.io/anchore/test_images:archlinux-28cca4e@sha256:a933b27534e5c911e2c660f7090aa497dee763fbbcb214a37207c2320cfedd98
 
   # these images are intended to have "partial coverage" when it comes to labels. These labels are narrowly targeted at confirmed
   # results or from sources that only report narrow findings. Analyses that use these images cannot confidently compute an F1 score,