Update Vercel deploy workflow with triggers

[ssimpson89]

Added manual trigger and scheduled run for Vercel deploy as per Mattermost conversation.

[wsoyinka]

@ssimpson89 - Thank you :-)

Please update with a comment above the cron line , interpreting the cron syntax to human speak e.g. "At minute 0 past every 6th hour (4 times a day?)"

[ssimpson89]

Please update with a comment above the cron line , interpreting the cron syntax to human speak e.g. "At minute 0 past every 6th hour (4 times a day?)"

@wsoyinka Done !

[github-actions]

Test results for 5109902:

Number of broken URLs: 14

URL,RESULT,FILENAME
 http://$(hostname):8080,failed,guides/repositories/pulp_fetch_upload.md
 http://your_ip,failed,guides/cms/mediawiki.md
 https://dl.rockylinux.org/pub/rocky/9.6/live/x86_64/,failed,guides/desktop/kde_installation.md
 https://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/ipmi-second-gen-interface-spec-v2-rev1-1.pdf,failed,guides/hardware/ipmi_management.md
 https://wiki.rockylinux.org/team/release_engineering/debranding/,failed,guides/package_management/package_debranding.md
 https://ftp.gnu.org/gnu/tar/,failed,guides/backup/tar.md
 https://support.torproject.org/glossary/pluggable-transports/,failed,guides/proxies/tor_relay.md
 https://docs.rockylinux.org/guides/contribute/ai-contribution-policy.md,failed,guides/contribute/README.md
 https://andyscott.me,failed,guides/contribute/README.md
 https://git.launchpad.net/cloud-init,failed,guides/virtualization/cloud-init/07_contributing.md
 https://www.packer.io/docs/builders/vsphere/vsphere-iso,failed,guides/automation/templates-automation-packer-vsphere.md
 https://ftp.gnu.org/gnu/hello/hello-2.12.tar.gz,failed,labs/systems_administration_I/lab7-software_management.md
 https://repocompare.rockylinux.org,failed,release_notes/8_5.md
 https://mirrors.fedoraproject.org/metalink?repo=epel-8&arch=$basearch&infra=$infra&content=$contentdir,failed,books/admin_guide/13-softwares.md

[wsoyinka]

Thank you @ssimpson89 :-)