Bump org.pgpainless:pgpainless-core from 1.7.6 to 2.0.0

Bumps [org.pgpainless:pgpainless-core](https://github.com/pgpainless/pgpainless) from 1.7.6 to 2.0.0.
- [Release notes](https://github.com/pgpainless/pgpainless/releases)
- [Changelog](https://github.com/pgpainless/pgpainless/blob/main/CHANGELOG.md)
- [Commits](pgpainless/pgpainless@1.7.6...2.0.0)

---
updated-dependencies:
- dependency-name: org.pgpainless:pgpainless-core
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

FlowCrypt/build.gradle.kts

@@ -512,7 +512,7 @@ dependencies {
   //kotlinx-serialization-core added to fix runtime issue with dependencies conflict.
   //Maybe it will be removed in future.
   implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.9.0")
-  implementation("org.pgpainless:pgpainless-core:1.7.6")
+  implementation("org.pgpainless:pgpainless-core:2.0.0")
   implementation("org.eclipse.angus:angus-mail:2.0.4")
   implementation("org.eclipse.angus:gimap:2.0.4")
   implementation("commons-io:commons-io:2.20.0")