pidgin/pidgin

Update the date in COPYRIGHT as it was a few years behind
release-2.x.y
7 weeks ago, Gary Kramlich
21a56db5f998
Update the date in COPYRIGHT as it was a few years behind

Testing Done:
None

Reviewed at https://reviews.imfreedom.org/r/3007/
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4992bd90d8ad78ebdd324dd90d3e9d443f7dd002 v2.10.6
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e38a9aa5b1f8d25c58a0a7da05b386f265cba6e3 v2.10.11
2ac1dcb9eb2ef9907ae0894ffad0c0e1b2e10f7d v2.10.12
0b7591cc7360e3fc0f6ff44df7840a286ddcba74 v2.11.0
20d36ae525beecdde6440b15133bf606b951c019 v2.12.0
20d36ae525beecdde6440b15133bf606b951c019 v2.12.0
fdf2bf2cd647460a804eabe3394b5bdbfcc68425 v2.12.0
fdf2bf2cd647460a804eabe3394b5bdbfcc68425 v2.12.0
0241f07ed2bade22499c841b36fa5e7c6a35a358 v2.12.0
0462a04774f89525cf65fd260e7f34520bc886d1 v2.13.0
26920ccc9bd7c5a0fdb6a1b942bc463a88faf9cd v2.14.0
f902de8a1b5eac32c33c63c95b40693ba5c4aed8 v2.14.1
2eb25613d05484109b7bf904ea4eaf6c5b47ae87 v2.14.2
723c284ecfa1c1b4c738b280ac08c3cddfa75dcd v2.14.3
288a5b3e994fa2ef4236f33f0bfeb063c381a9ec v2.14.4
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f729a2939e033edbbe1c59f038f6f59749aca68a v2.14.9
594d723693040b57a4d0faf403c9e15878047eac v2.14.10
010d58407f0ef4de0178023eff28c60fc8a44e25 v2.14.11
2fc862e230a7d64799e614a49ee49ef9d54f89a9 v2.14.12
1392ea316bd054f5f3d29b6954198d8b9e4f27fb v2.14.13