Replace packr with go embed (#1751)

* Embed performer images
* Embed schema migrations
* Update dependencies
* Embed UI
* Remove remaining packr references

vendor/github.com/golang-migrate/migrate/v4/database/util.go

@@ -2,6 +2,7 @@ package database
 
 import (
 	"fmt"
+	"go.uber.org/atomic"
 	"hash/crc32"
 	"strings"
 )
@@ -17,3 +18,16 @@ func GenerateAdvisoryLockId(databaseName string, additionalNames ...string) (str
 	sum = sum * uint32(advisoryLockIDSalt)
 	return fmt.Sprint(sum), nil
 }
+
+// CasRestoreOnErr CAS wrapper to automatically restore the lock state on error
+func CasRestoreOnErr(lock *atomic.Bool, o, n bool, casErr error, f func() error) error {
+	if !lock.CAS(o, n) {
+		return casErr
+	}
+	if err := f(); err != nil {
+		// Automatically unlock/lock on error
+		lock.Store(o)
+		return err
+	}
+	return nil
+}