Rename job from "release-build" to "install-dependencies" and fix activation command syntax in workflow

Author: PaulFirs

.github/workflows/test.yml

@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  release-build:
+  install-dependencies:
     runs-on: self-hosted
     container:
       image: ghcr.io/baremetaltestlab/bmlab-flash-toolkit:latest
@@ -18,5 +18,5 @@ jobs:
       - name: Build release distributions
         run: |
           python3 -m venv .venv
-          source .venv/bin/activate
+          . .venv/bin/activate
           pip install -e ".[dev]"