Execute CI on the main branch (#2064)

* This would enable conda package uploads for releases, matching the behavior in MRC

Closes #2042

## By Submitting this PR I confirm:
- I am familiar with the [Contributing Guidelines](https://github.com/nv-morpheus/Morpheus/blob/main/docs/source/developer_guide/contributing.md).
- When the PR is ready for review, new or existing tests cover these changes.
- When the PR is ready for review, the documentation is up to date with these changes.

Authors:
  - David Gardner (https://github.com/dagardner-nv)

Approvers:
  - Michael Demoret (https://github.com/mdemoret-nv)

URL: #2064

.github/workflows/pr.yaml

@@ -20,6 +20,7 @@ on:
     branches:
       - 'pull-request/**'
       - 'branch-*'
+      - 'main'
 
 # This allows a subsequently queued workflow run to interrupt previous runs
 concurrency:

ci/conda/recipes/morpheus-libs/meta.yaml

@@ -91,7 +91,7 @@ outputs:
         - feedparser =6.0.*
         - grpcio =1.62.*
         - lxml
-        - mlflow>=2.10.0,<3
+        - mlflow>=2.10.0,<2.18
         - mrc
         - networkx=2.8.8
         - numpydoc =1.5.*
@@ -239,7 +239,7 @@ outputs:
         - scripts/fetch_data.py
         - tests/*
       script: morpheus_llm_test.sh
- 
+
 about:
   home: https://github.com/nv-morpheus/Morpheus
   license: Apache-2.0

ci/conda/recipes/morpheus/meta.yaml

@@ -97,7 +97,7 @@ outputs:
         - feedparser =6.0.*
         - grpcio =1.62.*
         - libwebp>=1.3.2 # Required for CVE mitigation: https://nvd.nist.gov/vuln/detail/CVE-2023-4863
-        - mlflow>=2.10.0,<3
+        - mlflow>=2.10.0,<2.18
         - mrc
         - networkx=2.8.8
         - numpydoc =1.5.*