Update alpha-release-criteria.md

Update after Team Sync on 2020.12.07

book/src/dev/alpha-release-criteria.md

@@ -26,9 +26,9 @@ While Zebra is still in alpha, we don't guarantee support for any particular pla
 
 But you'll probably get the best results with a recent Ubuntu Linux, or the other platforms that our CI runs on.
 
-### Go/No-Go Status: 🛑
+### Go/No-Go Status: ⚠️
 
-_Last updated: December 4 2020_
+_Last updated: December 7 2020_
 
 - `zebrad` Functionality
     - `zebrad` can sync to mainnet tip
@@ -37,12 +37,12 @@ _Last updated: December 4 2020_
     - `zebrad` can stay within a few blocks of the mainnet tip after the initial sync
         - ⚠️ under excellent network conditions
         - _reasonable and sub-optimal network conditions are not yet supported_
-    - ✅  `zebrad` can validate proof of work
+    - ✅ `zebrad` can validate proof of work
     - ✅ `zebrad` can validate the transaction merkle tree
     - ⚠️ `zebrad` can serve blocks to peers
     - ✅ The hard-coded [checkpoint lists](https://github.com/ZcashFoundation/zebra/tree/main/zebra-consensus/src/checkpoint) are up-to-date
 - `zebrad` Performance
-    - ⚠️ `zebrad` functionality works on platforms that meet its system requirements
+    - ✅ `zebrad` functionality works on platforms that meet its system requirements
 - Testing
     - ⚠️ CI Passes
         - ✅  Unit tests pass reliably
@@ -50,12 +50,12 @@ _Last updated: December 4 2020_
         - ⚠️ Acceptance tests pass reliably
     - ✅ Each Zebra crate [builds individually](https://github.com/ZcashFoundation/zebra/issues/1364)
 - Implementation and Launch
-    - 🛑 All [release blocker bugs](https://github.com/ZcashFoundation/zebra/issues?q=is%3Aopen+is%3Aissue+milestone%3A%22First+Alpha+Release%22+label%3AC-bug) have been fixed
-    - ✅ The list of known serious issues is up to date
-    - ⚠️ The Zebra crate versions are up to date
-    - ✅ Users can access the documentation to deploy `zebrad` nodes
+    - ✅ All [release blocker bugs](https://github.com/ZcashFoundation/zebra/issues?q=is%3Aopen+is%3Aissue+milestone%3A%22First+Alpha+Release%22+label%3AC-bug) have been fixed
+    - ✅ The list of [known serious issues](https://github.com/ZcashFoundation/zebra#known-issues) is up to date
+    - ✅ The Zebra crate versions are up to date
+    - ⚠️ Users can access the documentation to deploy `zebrad` nodes
 - User Experience
-    - ⚠️ Build completes within 30 minutes in Zebra's CI
+    - ✅ Build completes within 40 minutes in Zebra's CI
         - ✅ Unused dependencies have been removed (use `cargo-udeps`)
     - ✅ `zebrad` executes normally
         - ✅ `zebrad`'s default logging works reasonably well in a terminal