chore: update modules/sentry-java to 7.20.0 #6448

Job	Run time
UPM Package validation	14s
cancel-previous-workflow	3s
Build - 2019	26s
Build - 2020	26s
Build - 2021	26s
sdk (Android, ubuntu-latest) / build	25s
sdk (Linux, ubuntu-20.04) / build	16s
sdk (Windows, windows-latest) / build	10s
${{ matrix.unity-version }} Prepare Smoke Test	1s
${{ matrix.unity-version }} ${{ matrix.platform }} Build Smoke Test	1s
${{ matrix.unity-version }} ${{ matrix.os }} Run Smoke Test	1s
${{ matrix.unity-version }} ${{ matrix.platform }} Compile Smoke Test	1s
${{ matrix.unity-version }} ${{ matrix.platform }} Run Smoke Test	1s
${{ matrix.unity-version }} Android ${{ matrix.api-level }} Run Smoke Test	1s
${{ matrix.unity-version }} iOS ${{ matrix.ios }} Run Smoke Test	1s
	2m 33s

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