PM-39072: Feat: Update premium action card copy (#7071)

Author: david-livefront

app/src/main/kotlin/com/x8bit/bitwarden/ui/vault/feature/vault/VaultContent.kt

@@ -599,7 +599,7 @@ private fun ActionCard(
                     id = BitwardenString
                         .a_premium_plan_gives_you_more_tools_to_stay_secure_and_in_control,
                 ),
-                actionText = stringResource(id = BitwardenString.upgrade_to_premium),
+                actionText = stringResource(id = BitwardenString.learn_more),
                 onActionClick = { vaultHandlers.actionCardClick(actionCardState) },
                 onDismissClick = { vaultHandlers.dismissActionCardClick(actionCardState) },
                 modifier = modifier,

app/src/test/kotlin/com/x8bit/bitwarden/ui/vault/feature/vault/VaultScreenTest.kt

@@ -1649,7 +1649,7 @@ class VaultScreenTest : BitwardenComposeTest() {
             .onNodeWithText(text = "Unlock advanced security features")
             .assertIsDisplayed()
         composeTestRule
-            .onNodeWithText(text = "Upgrade to Premium")
+            .onNodeWithText(text = "Learn more")
             .assertIsDisplayed()
     }
 
@@ -1661,7 +1661,7 @@ class VaultScreenTest : BitwardenComposeTest() {
         )
 
         composeTestRule
-            .onNodeWithText(text = "Upgrade to Premium")
+            .onNodeWithText(text = "Learn more")
             .assertIsDisplayed()
             .performClick()