Fix some issues reported by lintian

Fix some issues reported by lintian

• Trim trailing whitespace. (trailing-whitespace)
• Bump debhelper from old 11 to 13. (package-uses-old-debhelper-compat-version)
• Set upstream metadata fields: Archive, Bug-Database, Bug-Submit, Contact, Name (from ./configure), Repository, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking, upstream-metadata-missing-repository)
• Update standards version to 4.6.2, no changes needed. (out-of-date-standards-version)

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/39/9316da3aaf59a0cd30bebe91f3999a09c674de.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/fb/2976afe2214b7f2c79d2e1ba4bcfbd372327ab.debug

Control files of package r-cran-nloptr: lines which differ (wdiff format)

• Depends: libc6 (>= 2.14), libgcc-s1 (>= 3.0), libnlopt0 (>= 2.3), libstdc++6 (>= 11), r-base-core (>= 4.2.1-2), 4.2.2.20221110-2), r-api-4.0, r-cran-testthat

Control files of package r-cran-nloptr-dbgsym: lines which differ (wdiff format)

• Build-Ids: fb2976afe2214b7f2c79d2e1ba4bcfbd372327ab 399316da3aaf59a0cd30bebe91f3999a09c674de

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Build and test logs for this branch can be found at https://janitor.debian.net/run/6853d59f-6bff-4580-a9e5-04350ddc7165.