Bump lib/octache from df8235c to e78f7ac (#1159)

Bumps [lib/octache](https://github.com/Remi-Gau/Octache) from `df8235c` to `e78f7ac`.
- [Release notes](https://github.com/Remi-Gau/Octache/releases)
- [Commits](Remi-Gau/Octache@df8235c...e78f7ac)

---
updated-dependencies:
- dependency-name: lib/octache
  dependency-type: direct:production
...

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