Update dav4jvm to new okhttp package (#1786)

* Upgrade dav4jvm

* Exclude ktor from dav4jvm

* Fix imports and fix usages

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Fix imports for instrumented tests

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Fix imports

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Upgrade dav4jvm

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Do not exclude ktor in dav4jvm

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Upgrade dav4jvm

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

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Signed-off-by: Arnau Mora <arnyminerz@proton.me>