fix(deps): update dependency pg-connection-string to v2.7.0 (#8605)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[pg-connection-string](https://redirect.github.com/brianc/node-postgres/tree/master/packages/pg-connection-string)
([source](https://redirect.github.com/brianc/node-postgres/tree/HEAD/packages/pg-connection-string))
| [`2.6.4` ->
`2.7.0`](https://renovatebot.com/diffs/npm/pg-connection-string/2.6.4/2.7.0)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/pg-connection-string/2.7.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/pg-connection-string/2.7.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/pg-connection-string/2.6.4/2.7.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/pg-connection-string/2.6.4/2.7.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>brianc/node-postgres (pg-connection-string)</summary>

###
[`v2.7.0`](https://redirect.github.com/brianc/node-postgres/blob/HEAD/CHANGELOG.md#pg-cursor270)

[Compare
Source](https://redirect.github.com/brianc/node-postgres/compare/[email protected]@2.7.0)

- Convert to [es6
class](https://redirect.github.com/brianc/node-postgres/pull/2553)
- Add support for promises [to cursor
methods](https://redirect.github.com/brianc/node-postgres/pull/2554)

</details>

---

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yarn.lock

@@ -7360,14 +7360,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"pg-connection-string@npm:^2.5.0":
-  version: 2.6.4
-  resolution: "pg-connection-string@npm:2.6.4"
-  checksum: 10c0/0d0b617df0fc6507bf6a94bdcd56c7a305788a1402d69bff9773350947c8f525d6d8136128065370749a3325e99658ae40fbdcce620fb8e60126181f0591a6a6
-  languageName: node
-  linkType: hard
-
-"pg-connection-string@npm:^2.7.0":
+"pg-connection-string@npm:^2.5.0, pg-connection-string@npm:^2.7.0":
   version: 2.7.0
   resolution: "pg-connection-string@npm:2.7.0"
   checksum: 10c0/50a1496a1c858f9495d78a2c7a66d93ef3602e718aff2953bb5738f3ea616d7f727f32fc20513c9bed127650cd14c1ddc7b458396f4000e689d4b64c65c5c51e