docs: update references to renovate/renovate (main) (renovatebot#41938)

docs: update references to renovate/renovate

| datasource | package           | from    | to      |
| ---------- | ----------------- | ------- | ------- |
| docker     | renovate/renovate | 43.59.4 | 43.76.2 |
| docker     | renovate/renovate | 43.59   | 43.76   |

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docs/usage/docker.md

@@ -496,7 +496,7 @@ Make sure to install the Google Cloud SDK into the custom image, as you need the
 For example:
 
 ```Dockerfile
-FROM renovate/renovate:43.59.4
+FROM renovate/renovate:43.76.2
 # 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

@@ -36,8 +36,8 @@ 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:43
-docker run --rm renovate/renovate:43.59
-docker run --rm renovate/renovate:43.59.4
+docker run --rm renovate/renovate:43.76
+docker run --rm renovate/renovate:43.76.2
 ```
 
 <!-- prettier-ignore -->
@@ -73,7 +73,7 @@ spec:
             - name: renovate
               # Update this to the latest available and then enable Renovate on
               # the manifest
-              image: renovate/renovate:43.59.4
+              image: renovate/renovate:43.76.2
               args:
                 - user/repo
               # Environment Variables
@@ -132,7 +132,7 @@ spec:
       template:
         spec:
           containers:
-            - image: renovate/renovate:43.59.4
+            - image: renovate/renovate:43.76.2
               name: renovate-bot
               env: # For illustration purposes, please use secrets.
                 - name: RENOVATE_PLATFORM
@@ -378,7 +378,7 @@ spec:
           containers:
             - name: renovate
               # Update this to the latest available and then enable Renovate on the manifest
-              image: renovate/renovate:43.59.4
+              image: renovate/renovate:43.76.2
               volumeMounts:
                 - name: ssh-key-volume
                   readOnly: true