ci: use more accurate job names for actions

Signed-off-by: Michael Molisani <mmolisani@bloomberg.net>

Author: molisani

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ permissions:
     contents: read
 
 jobs:
-    main:
+    nx:
         runs-on: ubuntu-latest
         steps:
             - uses: actions/checkout@v4

.github/workflows/pr_labels.yml

@@ -8,7 +8,7 @@ on:
             - synchronize
 
 jobs:
-    main:
+    pr-labels:
         # Only run on local PRs, not forks
         if: github.event.pull_request.head.repo.full_name == github.repository
         runs-on: ubuntu-latest