Fix some issues reported by lintian

Fix some issues reported by lintian

• Set upstream metadata fields: Bug-Database, Bug-Submit, Contact, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking)
• Update lintian override info format in d/dia.lintian-overrides on line 2. (mismatched-override)

This merge proposal was created by the Janitor bot, and it will automatically rebase or close this proposal as appropriate when the target branch changes. Any comments you leave here will be read by the Janitor's maintainers.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/dia/13763149-d633-4ff7-95ad-8a65a3a81224.

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/ca/7451689a9cfa4e3d009e570a9281d1dace787c.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/0d/966a62fc61b745772e5321aaf912d589ec8d0d.debug

No differences were encountered between the control files of package **dia**

No differences were encountered between the control files of package **dia-common**

Control files of package dia-dbgsym: lines which differ (wdiff format)

• Build-Ids: 017a7cda33d940114de634a86c3e85833018be61 0d966a62fc61b745772e5321aaf912d589ec8d0d 0ef31852b645078ae94a4b386bbbb76571524ca1 0f07d87a7244e712fe239d0ac8babb265beff14b 10bf37d271764e190b302a7db78a77eb349e709e 190dd412816da4e0171ce957ba5286e1f04e798e 1de7f92a86ee0ddcbcacca8706565ac590dee905 3577e9456a07f3766db43b78c85e3d61e52ff7a0 3c8dc3311f0147e1e4164758b23d0c73cf0d802f 3ff53df7b9e35f56b40fd196ee11399f82533fcb 403425c0ae1d825a667d782c71d6dee7dcee00d3 4534f0bdcb7ce6485f103ab88ab235e0b6cd4e96 4732b73faed8a5e2cc9e90ef39cf71449d2a74a1 48401b94e1b6809e2bcc66074d9cbac64e9e3194 4a08e1d2a246487a4c41e80f282806eb49c68211 61a7e77032d6eef4bbe331e1afa12cbb367272ed 74a73fe9e10a9362f5ca428b108e4e0252660a16 774176845e65e1b22abb2bf9d3069b4a11f517a8 7ee35b2e5b145ffec6c7e3892b0e0c93f2cba2bb 839dc1271ee194870ea3416047aee6518f1622d6 88c8700af5cac5bcc4d778c9db34162424d4fa9a 948a3b17e1a36b20961b82c00fa6489394139528 a119f051017613622619dce8f22e4a209404caed a70bb647bb55c4e85be3f04ed304d916cfbbdcf1 b074d3db73308335ca7dc67cf9d028c5d3fbbe0e ba89562ca2c29391b9d01ff5f200764064b12921 ca7451689a9cfa4e3d009e570a9281d1dace787c cdc194d13ac8c4a8b033e70f154eede591519fdb cef8b4225464da4cfd076a5f2f968128de949981 df37e9f726813aaa0286b980d67630214879bd56 e24768a7232787d2a30104fdd56b09b3a2c65100 e8c947675a5080b076291dc8125838a82a3564cd eb9c0d29924d298e88d87eb54e594efcbc7e3973 ed84c4c346c9463639a2d9fbae685a6d2da7ad63 ef28f5a3e6e0b29ac02e597dc527c1b50ac8d6bd f6ddc0639ed0138b1ca7f947e6370dd4e3f2b1f9 fa64b24974249dea487990e7fb53eea7cf84ffb6

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