Adds fine-grained control to GitHub action labeler (#3436)

Previous merge led to matches for documentation that are unintentional.
This MR fixes the workflow.

- Bug fix (non-breaking change which fixes an issue)

- [x] I have read and understood the [contribution
guidelines](https://isaac-sim.github.io/IsaacLab/main/source/refs/contributing.html)
- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [x] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

---------
Signed-off-by: Mayank Mittal <12863862+Mayankm96@users.noreply.github.com>

.github/labeler.yml

@@ -5,13 +5,13 @@
 
 # Documentation-related changes
 documentation:
-  - changed-files:
-    - any-glob-to-any-file:
-      - 'docs/**'
-      - '**/README.md'
-    - all-globs-to-all-files:
-      - '!**/CHANGELOG.rst'
-      - '!docs/licenses/**'
+  - all:
+    - changed-files:
+      - any-glob-to-any-file:
+        - 'docs/**'
+        - '**/README.md'
+      - all-globs-to-all-files:
+        - '!docs/licenses/**'      
 
 # Infrastructure changes
 infrastructure:
@@ -55,14 +55,16 @@ isaac-mimic:
 
 # Isaac Lab team related changes.
 isaac-lab:
-  - changed-files:
-    - any-glob-to-any-file:
-      - source/**
-      - scripts/**
-    - all-globs-to-all-files:
-      - '!source/isaaclab_assets/**'
-      - '!source/isaaclab_mimic/**'
-      - '!scripts/imitation_learning/**'
+  - all:
+    - changed-files:
+      - any-glob-to-any-file:
+        - source/**
+        - scripts/**
+      - all-globs-to-all-files:
+        - '!source/isaaclab_assets/**'
+        - '!source/isaaclab_mimic/**'
+        - '!source/isaaclab/isaaclab/devices'
+        - '!scripts/imitation_learning/**'
 
 # Add 'enhancement' label to any PR where the head branch name
 # starts with `feature` or has a `feature` section in the name