Upgrade PDFBox API to v2.0.13 (TomRoush#353)

Upgrade PDFBox API to v2.0.12 (TomRoush#349)

Upgrade PDFBox API to v2.0.11 (TomRoush#346)

Upgrade PDFBox API to v2.0.10 (TomRoush#344)

Bump appcompat from 1.3.1 to 1.4.0 (TomRoush#335)

Bumps appcompat from 1.3.1 to 1.4.0.

---
updated-dependencies:
- dependency-name: androidx.appcompat:appcompat
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Upgrade PDFBox API to v2.0.8 (TomRoush#333)

Upgrade PDFBox API to v2.0.7 (TomRoush#329)

Upgrade PDFBox API to v2.0.6 (TomRoush#327)

Bump actions/setup-java from 2.3.0 to 2.3.1 (TomRoush#324)

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](actions/setup-java@v2.3.0...v2.3.1)

---
updated-dependencies:
- dependency-name: actions/setup-java
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Upgrade PDFBox API to v2.0.4 (TomRoush#317)