chore: update tarstreamer to 2.1.0

To improve php8 support

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

diff --git a/3rdparty b/3rdparty
index 6f18457f7dfcf23ce2877495a9323a144fd4a166..40ba794a53aeaf1848969cbac589f7ee712cd48d 160000 (submodule)
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 6f18457f7dfcf23ce2877495a9323a144fd4a166
+Subproject commit 40ba794a53aeaf1848969cbac589f7ee712cd48d