fix(deps): update ksp monorepo to v2.1.21-2.0.1 (#1965)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.devtools.ksp](https://goo.gle/ksp)
([source](https://redirect.github.com/google/ksp)) | `2.1.20-2.0.1` ->
`2.1.21-2.0.1` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.devtools.ksp:com.google.devtools.ksp.gradle.plugin/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.devtools.ksp:com.google.devtools.ksp.gradle.plugin/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.devtools.ksp:com.google.devtools.ksp.gradle.plugin/2.1.20-2.0.1/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.devtools.ksp:com.google.devtools.ksp.gradle.plugin/2.1.20-2.0.1/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
| [com.google.devtools.ksp:symbol-processing-api](https://goo.gle/ksp)
([source](https://redirect.github.com/google/ksp)) | `2.1.20-2.0.1` ->
`2.1.21-2.0.1` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.devtools.ksp:symbol-processing-api/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.devtools.ksp:symbol-processing-api/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.devtools.ksp:symbol-processing-api/2.1.20-2.0.1/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.devtools.ksp:symbol-processing-api/2.1.20-2.0.1/2.1.21-2.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>google/ksp (com.google.devtools.ksp)</summary>

###
[`v2.1.21-2.0.1`](https://redirect.github.com/google/ksp/compare/2.1.20-2.0.1...2.1.21-2.0.1)

[Compare
Source](https://redirect.github.com/google/ksp/compare/2.1.20-2.0.1...2.1.21-2.0.1)

</details>

---

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---

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code-generator/build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 }
 
 dependencies {
-    implementation("com.google.devtools.ksp:symbol-processing-api:2.1.20-2.0.1")
+    implementation("com.google.devtools.ksp:symbol-processing-api:2.1.21-2.0.1")
     implementation("com.squareup:kotlinpoet:2.1.0")
     implementation("com.squareup:kotlinpoet-ksp:2.1.0")
     implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.1")

github-workflows-kt/build.gradle.kts

@@ -7,7 +7,7 @@ plugins {
     buildsrc.convention.`duplicate-versions`
 
     kotlin("plugin.serialization")
-    id("com.google.devtools.ksp") version "2.1.20-2.0.1"
+    id("com.google.devtools.ksp") version "2.1.21-2.0.1"
 
     // Code quality.
     id("io.gitlab.arturbosch.detekt")