Switch to Go 1.22.0 and Caddy 2.7.6

What's Changed

• Added support of fixed filename by @karowski in #19 closes #18
• Switch to golang 1.22.0 and update Caddy to v2.7.6 ( 52de46c )
• Add more output variables to print-headers-template ( 52ebacc )
• add Expose UUID as a variable ( #14 )

New Contributors

• @karowski made their first contribution in #19

Full Changelog: v0.14...v.16