Bump org.flywaydb.flyway from 8.5.2 to 8.5.4 (#10194)

Bumps org.flywaydb.flyway from 8.5.2 to 8.5.4.

---
updated-dependencies:
- dependency-name: org.flywaydb.flyway
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

spitfire-server/database/build.gradle

@@ -7,7 +7,7 @@ buildscript {
 }
 
 plugins {
-    id 'org.flywaydb.flyway' version '8.5.2'
+    id 'org.flywaydb.flyway' version '8.5.4'
 }
 
 flyway {