Update nginx.conf

slack-bazel-build/docker/nginx.conf

diff --git a/slack-bazel-build/docker/nginx.conf b/slack-bazel-build/docker/nginx.conf
index c4f4a41..c7c8d9c 100644
--- a/slack-bazel-build/docker/nginx.conf
+++ b/slack-bazel-build/docker/nginx.conf
@@ -18,7 +18,7 @@
         listen      ${PORT};
         server_name slack.bazel.build;
 
-        return 301 https://join.slack.com/t/bazelbuild/shared_invite/zt-3z03j6exf-6vQ3Hc2FC_~DnMqY00qrSA;
+        return 301 https://join.slack.com/t/bazelbuild/shared_invite/zt-43r8nx55t-cu303ZizYNR6W1Kb4kwzjg;
 
         error_page   500 502 503 504  /50x.html;
         location = /50x.html {