### Description
Third PR for SDK-3200

- Adds support to the new signature format (salt + nonce + TS + etag +
content)
- Adds support for intermediate signatures verification
- Makes nonce optional in preparation of static endpoint signing.

Based on #1109 and #1110.

### Description
Third PR for SDK-3200

- Adds support to the new signature format (salt + nonce + TS + etag +
content)
- Adds support for intermediate signatures verification
- Makes nonce optional in preparation of static endpoint signing.

Based on #1109 and #1110.

**This is an automatic release.**

### New Features
* `Trusted Entitlements`: made API stable (#1105) via NachoSoto
(@NachoSoto)

This new feature prevents MitM attacks between the SDK and the
RevenueCat server.
With verification enabled, the SDK ensures that the response created by
the server was not modified by a third-party, and the entitlements
received are exactly what was sent.
This is 100% opt-in. `EntitlementInfos` have a new `VerificationResult`
property, which will indicate the validity of the responses when this
feature is enabled.

```kotlin
fun configureRevenueCat() {
    val configuration = PurchasesConfiguration.Builder(context, apiKey)
        .entitlementVerificationMode(EntitlementVerificationMode.INFORMATIONAL)
        .build()
    Purchases.configure(configuration)
}
```
### Experimental features
* Add await offerings (#1096) via Cesar de la Vega (@vegaro)
### Bugfixes
* Fix issue updating customer info on app open (#1128) via Toni Rico
(@tonidero)
### Dependency Updates
* Bump fastlane-plugin-revenuecat_internal from `13773d2` to `b2108fb`
(#1095) via dependabot[bot] (@dependabot[bot])
### Other Changes
* [PurchaseTester] Add option to purchase an arbitrary product id
(#1099) via Mark Villacampa (@MarkVillacampa)
* Fix release path after module refactor (#1129) via Toni Rico
(@tonidero)
* Fix load shedder integration tests (#1125) via Toni Rico (@tonidero)
* Trusted entitlements: New trusted entitlements signature format
(#1117) via Toni Rico (@tonidero)
* Fix integration tests and change to a different project (#1123) via
Toni Rico (@tonidero)
* Move files into src/main/kotlin (#1122) via Cesar de la Vega (@vegaro)
* Remove public module (#1113) via Cesar de la Vega (@vegaro)
* Remove common module (#1106) via Cesar de la Vega (@vegaro)
* Fix flaky integration tests: Wait for coroutines to finish before
continuing (#1120) via Toni Rico (@tonidero)
* Move amazon module into purchases (#1112) via Cesar de la Vega
(@vegaro)
* Trusted entitlements: Add IntermediateSignatureHelper to handle
intermediate signature verification process (#1110) via Toni Rico
(@tonidero)
* Trusted entitlements: Add Signature type to process new signature
response format (#1109) via Toni Rico (@tonidero)
* [EXTERNAL] Add `awaitCustomerInfo` / coroutines tests to
`TrustedEntitlementsInformationalModeIntegrationTest` (#1077) via
@pablo-guardiola (#1107) via Toni Rico (@tonidero)
* Remove feature:google module (#1104) via Cesar de la Vega (@vegaro)
* Remove identity module (#1103) via Cesar de la Vega (@vegaro)
* Remove subscriber attributes module (#1102) via Cesar de la Vega
(@vegaro)
* Delete utils module (#1098) via Cesar de la Vega (@vegaro)
* Remove strings module (#1097) via Cesar de la Vega (@vegaro)
* Update CHANGELOG.md to include external contribution (#1100) via Cesar
de la Vega (@vegaro)
* [EXTERNAL] Add missing `fetchPolicy` parameter to `awaitCustomerInfo`
API (#1086) via @pablo-guardiola (#1090) via Toni Rico (@tonidero)

---------

Co-authored-by: revenuecat-ops <ops@revenuecat.com>
Co-authored-by: Toni Rico <antonio.rico.diez@revenuecat.com>