ci: tweak integration checks

.github/workflows/integration.yml

@@ -7,6 +7,8 @@ on:
       - master
       - 'release-*'
       - beta
+    tags:
+      - '@agoric/sdk@*'
   pull_request:
     types:
       - opened
@@ -28,6 +30,7 @@ jobs:
     if: needs.pre_check.outputs.should_run == 'true'
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         cli: [link-cli/yarn, registry/yarn, registry/npm, registry/npx]
     timeout-minutes: 40
@@ -76,6 +79,8 @@ jobs:
 
       - name: run agoric-cli integration-test
         run: scripts/registry.sh test ${{ matrix.cli }} ${{steps.get-branch.outputs.result}}
+        # The Endo version used by this release is incompatible with npx
+        continue-on-error: ${{ matrix.cli == 'registry/npx' }}
 
       - name: notify on failure
         if: >