Bump Trivy to 0.69.2

Trivy had security incident on 1st March 2026 [1], resulting losing all
GitHub Releases between 0.27.0-0.69.1.
They then restored the latest as 0.69.2

[1] https://github.com/aquasecurity/trivy/discussions/10265

(cherry picked from commit 9144c9f)

Author: seunghun1ee

.github/workflows/stackhpc-container-image-build.yml

@@ -142,7 +142,7 @@ jobs:
 
       - name: Install Trivy
         run: |
-          curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sudo sh -s -- -b /usr/local/bin v0.49.0
+          curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sudo sh -s -- -b /usr/local/bin v0.69.2
 
       - name: Install Kayobe
         run: |

tools/scan-images.sh

@@ -11,7 +11,7 @@ set -u
 
 # Check that trivy is installed
 if ! trivy --version; then
-  echo 'Please install trivy: curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin v0.49.1'
+  echo 'Please install trivy: curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin v0.69.2'
 fi
 
 # Clear any previous outputs