docs: update references to renovate/renovate

| datasource | package           | from     | to       |
| ---------- | ----------------- | -------- | -------- |
| docker     | renovate/renovate | 38.110.2 | 38.120.1 |
| docker     | renovate/renovate | 38.110   | 38.120   |

docs/usage/docker.md

@@ -478,7 +478,7 @@ Make sure to install the Google Cloud SDK into the custom image, as you need the
 For example:
 
 ```Dockerfile
-FROM renovate/renovate:38.110.2
+FROM renovate/renovate:38.120.1
 # Include the "Docker tip" which you can find here https://cloud.google.com/sdk/docs/install
 # under "Installation" for "Debian/Ubuntu"
 RUN ...

docs/usage/examples/self-hosting.md

@@ -25,8 +25,8 @@ It builds `latest` based on the `main` branch and all SemVer tags are published
 ```sh title="Example of valid tags"
 docker run --rm renovate/renovate
 docker run --rm renovate/renovate:38
-docker run --rm renovate/renovate:38.110
-docker run --rm renovate/renovate:38.110.2
+docker run --rm renovate/renovate:38.120
+docker run --rm renovate/renovate:38.120.1
 ```
 
 <!-- prettier-ignore -->
@@ -62,7 +62,7 @@ spec:
             - name: renovate
               # Update this to the latest available and then enable Renovate on
               # the manifest
-              image: renovate/renovate:38.110.2
+              image: renovate/renovate:38.120.1
               args:
                 - user/repo
               # Environment Variables
@@ -121,7 +121,7 @@ spec:
       template:
         spec:
           containers:
-            - image: renovate/renovate:38.110.2
+            - image: renovate/renovate:38.120.1
               name: renovate-bot
               env: # For illustration purposes, please use secrets.
                 - name: RENOVATE_PLATFORM
@@ -367,7 +367,7 @@ spec:
           containers:
             - name: renovate
               # Update this to the latest available and then enable Renovate on the manifest
-              image: renovate/renovate:38.110.2
+              image: renovate/renovate:38.120.1
               volumeMounts:
                 - name: ssh-key-volume
                   readOnly: true