ci: be consistent in how we install tox

No need to upgrade when it's not already installed.

Author: bluetech

.github/workflows/deploy.yml

@@ -55,7 +55,7 @@ jobs:
     - name: Install tox
       run: |
         python -m pip install --upgrade pip
-        pip install --upgrade tox
+        pip install tox
 
     - name: Generate release notes
       env:

.github/workflows/doc-check-links.yml

@@ -28,7 +28,7 @@ jobs:
           python-version: "3.13"
           cache: pip
 
-      - name: Install dependencies
+      - name: Install tox
         run: |
           python -m pip install --upgrade pip
           pip install tox

.github/workflows/prepare-release-pr.yml

@@ -38,10 +38,10 @@ jobs:
       with:
         python-version: "3.13"
 
-    - name: Install dependencies
+    - name: Install tox
       run: |
         python -m pip install --upgrade pip
-        pip install --upgrade tox
+        pip install tox
 
     - name: Prepare release PR (minor/patch release)
       if: github.event.inputs.major == 'no'

.github/workflows/test.yml

@@ -268,7 +268,7 @@ jobs:
         check-latest: true
         allow-prereleases: true
 
-    - name: Install dependencies
+    - name: Install tox
       run: |
         python -m pip install --upgrade pip
         pip install tox

.github/workflows/update-plugin-list.yml

@@ -40,7 +40,7 @@ jobs:
       - name: Install tox
         run: |
           python -m pip install --upgrade pip
-          pip install --upgrade tox
+          pip install tox
 
       - name: Update Plugin List
         run: tox -e update-plugin-list