We want to do a deploy for socorro tagged 2021.04.21.

It consists of the following:

0c6190f: Update to Python 3.9.4 (willkg)
5ee6b5a: bug 1704529: clean up field value truncation code (willkg)
a895789: bug 1705027: add NS_CycleCollectorSuspect3 to prefix list (willkg)
f089fcb: bug 1704872: fix operands for percent_of_total_crashes_diff calculation (willkg)
eb59776: bug 1111612: add major_version and make it searchable (willkg)
986f459: bug 1671593: fix adapter_device_id and adapter_vendor_id querying (willkg)
181f3a6: bug 1699492: fix mutation issues in signature generation (willkg)
31fe07e: bug 1282707: fix Bugs API to work with GET and POST (willkg)
8686fcf: bug 974968, 1629943: improve Extensions tab (willkg)
7364cec: bug 1705573: fix correlations tab in signature report (willkg)
302321d: Update minidump-stackwalk to 2021.04.19 (willkg)
8853b83: Add skip for failing test (willkg)
0c2dde6: bug 1706075: add Windows functions to prefix list (willkg)

Tagged:

tag 2021.04.21
Tagger: Will Kahn-Greene <willkg@mozilla.com>
Date:   Wed Apr 21 10:45:55 2021 -0400

`0c6190f`: Update to Python 3.9.4 (willkg)
`5ee6b5a`: bug 1704529: clean up field value truncation code (willkg)
`a895789`: bug 1705027: add NS_CycleCollectorSuspect3 to prefix list (willkg)
`f089fcb`: bug 1704872: fix operands for percent_of_total_crashes_diff calculation (willkg)
`eb59776`: bug 1111612: add major_version and make it searchable (willkg)
`986f459`: bug 1671593: fix adapter_device_id and adapter_vendor_id querying (willkg)
`181f3a6`: bug 1699492: fix mutation issues in signature generation (willkg)
`31fe07e`: bug 1282707: fix Bugs API to work with GET and POST (willkg)
`8686fcf`: bug 974968, 1629943: improve Extensions tab (willkg)
`7364cec`: bug 1705573: fix correlations tab in signature report (willkg)
`302321d`: Update minidump-stackwalk to 2021.04.19 (willkg)
`8853b83`: Add skip for failing test (willkg)
`0c2dde6`: bug 1706075: add Windows functions to prefix list (willkg)

Deploy bug #1706647
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commit 0c2dde613d3e741a546e5a84cb8a1e916404f74c (HEAD -> main, tag: 2021.04.21, official/main)
Author: Will Kahn-Greene <willkg@mozilla.com>
Date:   Wed Apr 21 08:32:47 2021 -0400

    bug 1706075: add Windows functions to prefix list
    
    This adds KiRaiseUserExceptionDispatcher, KiFastSystemCall, and SetEvent
    to the prefix list so that signature continues past them to Firefox
    frames.

Deploy looks good. Marking as FIXED.