release: dedupe, update LavaMoat policies, update attributions

Author: metamaskbot

attribution.txt

@@ -28113,7 +28113,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 ******************************
 
 @metamask/bitcoin-wallet-snap
-1.5.0 <https://github.com/MetaMask/snap-bitcoin-wallet>
+1.6.0 <https://github.com/MetaMask/snap-bitcoin-wallet>
 license: (MIT-0 OR Apache-2.0)
 authors: undefined