GPG signature verification issue with install-cli-action@4

[redbassett]

I have dependabot trying to upgrade 1password/install-cli-action@v4 from v3 and this change is breaking my builds. I see a few other recent issues on here that are closed referencing breaking of builds (#38, #42, and #43 in particular), however none of these seem to indicate the same issue I am seeing:

2026-07-17T06:22:45.0353924Z ##[group]Run 1password/install-cli-action@v4
2026-07-17T06:22:45.0354443Z with:
2026-07-17T06:22:45.0354820Z   version: latest
2026-07-17T06:22:45.0355215Z ##[endgroup]
2026-07-17T06:22:45.0359812Z ##[command]/usr/bin/docker exec  59519c4b1080fa70b621f5ce218d63eb00f1e193449a0182021344a370a5262e sh -c "cat /etc/*release | grep ^ID"
2026-07-17T06:22:45.2868301Z Validating version number: 'latest'
2026-07-17T06:22:45.2873788Z Version number 'latest' is valid
2026-07-17T06:22:45.2883307Z Resolving version: latest
2026-07-17T06:22:45.2884194Z Getting latest version number
2026-07-17T06:22:45.6904623Z Downloading 1Password CLI from: https://cache.agilebits.com/dist/1P/op2/pkg/v2.35.0/op_linux_amd64_v2.35.0.zip
2026-07-17T06:22:46.0325340Z Installing 1Password CLI
2026-07-17T06:22:46.0372334Z [command]/usr/bin/unzip -o -q /__w/_temp/ce470b24-5220-48e6-ab94-7b1feed400a3
2026-07-17T06:22:46.4479642Z Verifying 1Password CLI signature
2026-07-17T06:22:46.4609802Z error: Error: 1Password CLI signature verification failed: spawn gpg ENOENT. If 1Password has rotated their GPG signing key, this action needs to be updated — please file an issue at https://github.com/1Password/install-cli-action/issues.
2026-07-17T06:22:46.4615382Z     at verifyLinuxSignature (file:///__w/_actions/1password/install-cli-action/v4/dist/index.js:34580:15)
2026-07-17T06:22:46.4616750Z     at process.processTicksAndRejections (node:internal/process/task_queues:104:5)
2026-07-17T06:22:46.4618136Z     at async LinuxInstaller.install (file:///__w/_actions/1password/install-cli-action/v4/dist/index.js:34609:9)
2026-07-17T06:22:46.4619840Z     at async LinuxInstaller.installCli (file:///__w/_actions/1password/install-cli-action/v4/dist/index.js:34600:9)
2026-07-17T06:22:46.4621188Z     at async installCliOnGithubActionRunner (file:///__w/_actions/1password/install-cli-action/v4/dist/index.js:34828:5)
2026-07-17T06:22:46.4622680Z     at async run (file:///__w/_actions/1password/install-cli-action/v4/dist/index.js:34843:9)
2026-07-17T06:22:46.4651021Z ##[error]1Password CLI signature verification failed: spawn gpg ENOENT. If 1Password has rotated their GPG signing key, this action needs to be updated — please file an issue at https://github.com/1Password/install-cli-action/issues.

As noted in the above logs, there seems to be a signature issue occurring with simply the change of the the version tag from v3 to v4 on an otherwise-working build workflow.