feat: nodeinfo 2.1 (#11805)

* feat: enable nodeinfo 2.1

Since 9dd06a76, nodeinfo 2.1 has been released.

Signed-off-by: xtex <xtexchooser@duck.com>

* feat: only add software.repository to nodeinfo 2.1

https://github.com/jhass/nodeinfo/commit/e54c48e171b6f6bed6fbe2b6c0bdd8d3c16f7909


Signed-off-by: xtex <xtexchooser@duck.com>

* feat: add software.homepage url to nodeinfo 2.1

https://github.com/jhass/nodeinfo/commit/507822cb3c16d84dac884d878e32825ade54028d


Signed-off-by: xtex <xtexchooser@duck.com>

* fix: set proper Content-Type for nodeinfo

Signed-off-by: xtex <xtexchooser@duck.com>

* style: fix lint warnings

Signed-off-by: xtex <xtexchooser@duck.com>

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Signed-off-by: xtex <xtexchooser@duck.com>