[changelog skip] Update to Hatchet 7.0.0 (#1045)

Gemfile.lock

@@ -1,50 +1,37 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.2.2)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-      zeitwerk (~> 2.2)
     ansi (1.5.0)
     ci-queue (0.17.2)
       ansi
     citrus (3.0.2)
-    concurrent-ruby (1.1.6)
     diff-lcs (1.3)
     erubis (2.7.0)
-    excon (0.73.0)
+    excon (0.76.0)
     heroics (0.1.1)
       erubis (~> 2.0)
       excon
       moneta
       multi_json (>= 1.9.2)
-    heroku_hatchet (6.0.0)
+    heroku_hatchet (7.0.0)
       excon (~> 0)
-      platform-api (= 3.0.0.pre.1)
-      repl_runner (~> 0.0.3)
+      platform-api (~> 3)
       rrrretry (~> 1)
       thor (~> 0)
       threaded (~> 0)
-    i18n (1.8.2)
-      concurrent-ruby (~> 1.0)
     json (2.3.0)
-    minitest (5.14.0)
     moneta (1.0.0)
-    multi_json (1.14.1)
+    multi_json (1.15.0)
     parallel (1.19.1)
     parallel_tests (2.32.0)
       parallel
-    platform-api (3.0.0.pre.1)
+    platform-api (3.0.0)
       heroics (~> 0.1.1)
       moneta (~> 1.0.0)
       rate_throttle_client (~> 0.1.0)
     rake (13.0.1)
-    rate_throttle_client (0.1.1)
+    rate_throttle_client (0.1.2)
     redis (4.1.3)
-    repl_runner (0.0.3)
-      activesupport
     rrrretry (1.0.0)
     rspec-core (3.9.1)
       rspec-support (~> 3.9.1)
@@ -55,13 +42,9 @@ GEM
       rspec-core (> 3.3)
     rspec-support (3.9.2)
     thor (0.20.3)
-    thread_safe (0.3.6)
     threaded (0.0.4)
     toml-rb (2.0.1)
       citrus (~> 3.0, > 3.0)
-    tzinfo (1.2.7)
-      thread_safe (~> 0.1)
-    zeitwerk (2.3.0)
 
 PLATFORMS
   ruby

app.json

@@ -9,7 +9,7 @@
       "env": {
           "HATCHET_RETRIES":    "3",
           "IS_RUNNING_ON_CI":   "true",
-          "HATCHET_APP_LIMIT":  "80",
+          "HATCHET_APP_LIMIT":  "100",
           "BUILDPACK_LOG_FILE": "tmp/buildpack.log"
       },
       "formation": {