chore: add Radxa 2026 key

Signed-off-by: ZHANG Yuntian <yt@radxa.com>

Author: RadxaYuntian

src/share/rsdk/infra-repo/.github/workflows/build.yaml.jsonnet

@@ -84,11 +84,14 @@ function(
                             APTLY_PATH=/tmp/aptly/xc-out/*/linux_amd64
                             export PATH="$APTLY_PATH:$PATH"
 
+                            cat << EOF | gpg --import
+                            ${{ secrets.RADXA_APT_KEY_2024 }}
+                            EOF
                             cat << EOF | gpg --import
                             ${{ secrets.GPG_KEY }}
                             EOF
                             cat << EOF | gpg --import
-                            ${{ secrets.RADXA_APT_KEY_2024 }}
+                            ${{ secrets.RADXA_APT_KEY_2026 }}
                             EOF
 
                             suites=(

src/share/rsdk/infra-repo/.github/workflows/update.yaml.jsonnet

@@ -37,7 +37,9 @@ function(
                         with: {
                             script: |||
                                 const secrets = JSON.parse(process.env.SECRETS);
-                                if (secrets.GPG_KEY === undefined || secrets.RADXA_APT_KEY_2024 === undefined) {
+                                if (secrets.RADXA_APT_KEY_2024 === undefined ||
+                                    secrets.GPG_KEY === undefined ||
+                                    secrets.RADXA_APT_KEY_2026 === undefined) {
                                     core.setFailed('Required secrets are unset!');
                                 }
                             |||,