Bump requirements (mainly for Docker's benefit)

requirements/main.txt

@@ -3,10 +3,10 @@
 # installation
 cffi == 1.14.0
 coloredlogs == 14.0  # technically optional
-img2pdf == 0.3.4
+img2pdf == 0.3.6
 pdfminer.six == 20200517
-pikepdf == 1.14.0
+pikepdf == 1.15.1
 pluggy == 0.13.1
-Pillow == 7.1.1
-reportlab == 3.5.34
-tqdm == 4.45.0
+Pillow == 7.1.2
+reportlab == 3.5.42
+tqdm == 4.46.1

requirements/test.txt

@@ -1,7 +1,7 @@
 pytest >= 5.0.0
 pytest-helpers-namespace >= 2019.1.8
 pytest-xdist >= 1.31.0
-pytest-cov >= 2.9.0
+pytest-cov >= 2.10.0
 python-xmp-toolkit == 2.0.1  # requires apt-get install libexempi3
                      # or brew install exempi
 #PyMuPDF == 1.13.4    # optional

requirements/watcher.txt

@@ -1 +1 @@
-watchdog >= 0.8.2, < 1.0
+watchdog == 0.10.2