Bump glean-parser from 1.20.4 to 1.21.0

Bumps [glean-parser](https://github.com/mozilla/glean_parser) from 1.20.4 to 1.21.0.
- [Release notes](https://github.com/mozilla/glean_parser/releases)
- [Changelog](https://github.com/mozilla/glean_parser/blob/master/HISTORY.rst)
- [Commits](mozilla/glean_parser@v1.20.4...v1.21.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements/all.txt

@@ -156,9 +156,9 @@ flake8==3.7.9 \
 future==0.18.2 \
     --hash=sha256:b1bead90b70cf6ec3f0710ae53a525360fa360d306a86583adc6bf83a4db537d \
     # via pefile
-glean-parser==1.20.4 \
-    --hash=sha256:8f3461cb9de523a464e1e915e892ee2e6eee9f51a306c9f3a08ec140a5c55855 \
-    --hash=sha256:d15a77ead6e39835a490009c47b4a71a1a6b5edbd21d8228ff97b34080900bc7 \
+glean-parser==1.21.0 \
+    --hash=sha256:bdd64f4024c4363d195149022195a4eafe710aa9b2fdd563eb4d03b1ac0b195e \
+    --hash=sha256:3e86163ed700154ba4c27c7a661b65065c8a76e520b922ac013632a42e295d32 \
     # via glean-sdk
 glean-sdk==27.1.0 \
     --hash=sha256:125d9ade182e006054f00bc27b4c4382ff63e150f8f8bd1e55b6169c1f47d6f4 \

requirements/console-dev.txt

@@ -134,9 +134,9 @@ distro==1.5.0 \
     --hash=sha256:df74eed763e18d10d0da624258524ae80486432cd17392d9c3d96f5e83cd2799 \
     --hash=sha256:0e58756ae38fbd8fc3020d54badb8eae17c5b9dcbed388b17bb55b8a5928df92 \
     # via mozinfo
-glean-parser==1.20.4 \
-    --hash=sha256:8f3461cb9de523a464e1e915e892ee2e6eee9f51a306c9f3a08ec140a5c55855 \
-    --hash=sha256:d15a77ead6e39835a490009c47b4a71a1a6b5edbd21d8228ff97b34080900bc7 \
+glean-parser==1.21.0 \
+    --hash=sha256:bdd64f4024c4363d195149022195a4eafe710aa9b2fdd563eb4d03b1ac0b195e \
+    --hash=sha256:3e86163ed700154ba4c27c7a661b65065c8a76e520b922ac013632a42e295d32 \
     # via glean-sdk
 glean-sdk==27.1.0 \
     --hash=sha256:125d9ade182e006054f00bc27b4c4382ff63e150f8f8bd1e55b6169c1f47d6f4 \