Bump posthog version to 3.2.0

[BillCarsonFr]

Bump posthog version to 3.2.0.
We were using a quite old posthog sdk. Updating to the new one mainly because it now support sessions. Allow us to have a per device view instead of only unique users that is merging events from all the devices of the same user.

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Motivation and context

Screenshots / GIFs

Tests

• Step 1
• Step 2
• Step ...

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/element-hq/element-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[ElementBot]

	Warnings
⚠️	vector/build.gradle#L133 - A newer version of androidx.media:media than 1.6.0 is available: 1.7.0
⚠️	vector/build.gradle#L133 - A newer version of androidx.media:media than 1.6.0 is available: 1.7.0
⚠️	vector/build.gradle#L134 - A newer version of androidx.transition:transition than 1.4.1 is available: 1.5.0
⚠️	vector/build.gradle#L134 - A newer version of androidx.transition:transition than 1.4.1 is available: 1.5.0
⚠️	vector/build.gradle#L137 - A newer version of org.threeten:threetenbp than 1.4.0 is available: 1.4.4
⚠️	vector/build.gradle#L137 - A newer version of org.threeten:threetenbp than 1.4.0 is available: 1.4.4
⚠️	vector/build.gradle#L202 - A newer version of androidx.browser:browser than 1.5.0 is available: 1.8.0
⚠️	vector/build.gradle#L202 - A newer version of androidx.browser:browser than 1.5.0 is available: 1.8.0
⚠️	vector/build.gradle#L240 - A newer version of androidx.emoji2:emoji2 than 1.3.0 is available: 1.4.0
⚠️	vector/build.gradle#L240 - A newer version of androidx.emoji2:emoji2 than 1.3.0 is available: 1.4.0
⚠️	vector/build.gradle#L324 - A newer version of org.jetbrains.kotlin:kotlin-reflect than 1.8.21 is available: 1.8.22
⚠️	vector/build.gradle#L324 - A newer version of org.jetbrains.kotlin:kotlin-reflect than 1.8.21 is available: 1.8.22

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[bmarty]

LGTM, thanks!