Bump main-repo from fc17138 to 26072c2

Bumps [main-repo](https://github.com/dotnet-project-file-analyzers/dotnet-project-file-analyzers) from `fc17138` to `26072c2`.
- [Release notes](https://github.com/dotnet-project-file-analyzers/dotnet-project-file-analyzers/releases)
- [Commits](dotnet-project-file-analyzers/dotnet-project-file-analyzers@fc17138...26072c2)

---
updated-dependencies:
- dependency-name: main-repo
  dependency-version: 26072c2ad74e89a4a80d3f36c7839796212f3003
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]