chore: use SNAPSHOT version of EDC

[paullatzelsperger]

What this PR changes/adds

Use the SNAPSHOT version of EDC

Why it does that

to have the ability for cascaded builds and up-to-date versions, avoid feature gaps

Further notes

• disabled a failing action for now, will re-enable before merging

Linked Issue(s)

.

Checklist

• added appropriate tests?
• performed checkstyle check locally?
• added/updated copyright headers?
• documented public classes/methods?
• added/updated relevant documentation?
• added relevant details to the changelog? (skip with label no-changelog)
• formatted title correctly? (take a look at the CONTRIBUTING and styleguide for details)