feat: Add PostgreSQL 18 support

[ZPascal]

• Add Pg 18 support

Should be discussed:
Should we add PG 18 as default version?

[Alphasite]

I think this looks good to me. it looks similar to the other versions

[ZPascal]

@Alphasite Should we replace the default version to PG 18?

[Alphasite]

I think that’s reasonable. We’d probably want to also add it to BBR if we did that then? Chris, Colin and I just added PG 15, 16 and 17. 18 also seems reasonable.

[ZPascal]

I think that’s reasonable. We’d probably want to also add it to BBR if we did that then? Chris, Colin and I just added PG 15, 16 and 17. 18 also seems reasonable.

Hi @Alphasite, I also prefer it, but we should release it as a new major release.

We’d probably want to also add it to BBR if we did that then? Chris, Colin and I just added PG 15, 16 and 17. 18 also seems reasonable.

The BBR job already supports PG 15,16 and 17, and I've also replaced the default version to 18 inside the BBR job.