fix(deps): update dependency proj4 to v2.15.0 (#2405)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [proj4](https://proj4js.github.io/proj4js/)
([source](https://redirect.github.com/proj4js/proj4js)) | [`2.14.0` ->
`2.15.0`](https://renovatebot.com/diffs/npm/proj4/2.14.0/2.15.0) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/proj4/2.15.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/proj4/2.15.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/proj4/2.14.0/2.15.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/proj4/2.14.0/2.15.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>proj4js/proj4js (proj4)</summary>

###
[`v2.15.0`](https://redirect.github.com/proj4js/proj4js/releases/tag/v2.15.0)

[Compare
Source](https://redirect.github.com/proj4js/proj4js/compare/v2.14.0...v2.15.0)

#### What's Changed

- Support more datum codes with smaller library size by
[@&#8203;ahocevar](https://redirect.github.com/ahocevar) in
[https://github.com/proj4js/proj4js/pull/486](https://redirect.github.com/proj4js/proj4js/pull/486)
- Start UTM zone defs at 32601 and 32701 instead of 32600 and 32700 by
[@&#8203;ahocevar](https://redirect.github.com/ahocevar) in
[https://github.com/proj4js/proj4js/pull/487](https://redirect.github.com/proj4js/proj4js/pull/487)

**Full Changelog**:
proj4js/proj4js@v2.14.0...v2.15.0

</details>

---

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---

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---

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src/main/app/package.json

@@ -38,7 +38,7 @@
     "ngx-editor": "17.5.4",
     "ol": "10.3.1",
     "openapi-fetch": "0.13.4",
-    "proj4": "2.14.0",
+    "proj4": "2.15.0",
     "rxjs": "7.8.1",
     "ts-expect": "1.3.0",
     "ts-pattern": "5.6.0",