Fix some issues reported by lintian

Fix some issues reported by lintian

• debian/copyright: use spaces rather than tabs to start continuation lines. (tab-in-license-text)

• Use correct machine-readable copyright file URI. (out-of-date-copyright-format-uri)

• Use secure URI in Homepage field. (homepage-field-uses-insecure-uri)

• Move transitional package sat-pubsub to oldlibs/optional per policy 4.0.1. (transitional-package-not-oldlibs-optional)

• Update standards version to 4.6.1, no changes needed. (out-of-date-standards-version)

This merge proposal was created automatically by the Janitor bot. For more information, including instructions on how to disable these merge proposals, see https://janitor.debian.net/lintian-fixes.

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Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/libervia-pubsub/19e32add-9e73-41a6-a909-a772e8adda03.

Debdiff

These changes affect the binary packages:

File lists identical (after any substitutions)

Control files of package libervia-pubsub: lines which differ (wdiff format)

• Homepage: [-http​://repos.goffi.org/libervia-pubsub-] {+https​://repos.goffi.org/libervia-pubsub+}

Control files of package sat-pubsub: lines which differ (wdiff format)

• Homepage: [-http​://repos.goffi.org/libervia-pubsub-] {+https​://repos.goffi.org/libervia-pubsub+}

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